🇩🇪 Max Planck Research Group Leader, Hannover/Potsdam, Germany 🇩🇪
The Max Planck Society invites all scientists with a doctorate to apply for one of several positions as Max Planck Research Group Leader.
Successful candidates will be offered their own Max Planck Research Group at a participating Max Planck Institute of their own choice for an initial period of six years. As a Max Planck Research Group Leader, you will enjoy a world-class research environment at a Max Planck Institute with state-of-the-art infrastructure, administrative support, and the intellectual freedom to pursue an original research programme. The funding package of up to 2.7 Mio euros includes a German W2 position (equivalent to an assistant or untenured associate professorship), additional resources for the hiring of scientific staff and a budget to realize the project.
To submit your application online and for more details about the programme, please visit:
https://mprg.mpg.de
The deadline for applications is 14 October 2024.
For more information about the Max Planck Society and its institutes, please see:
https://www.mpg.de/en/
The Max Planck Society invites all scientists with a doctorate to apply for one of several positions as Max Planck Research Group Leader.
Successful candidates will be offered their own Max Planck Research Group at a participating Max Planck Institute of their own choice for an initial period of six years. As a Max Planck Research Group Leader, you will enjoy a world-class research environment at a Max Planck Institute with state-of-the-art infrastructure, administrative support, and the intellectual freedom to pursue an original research programme. The funding package of up to 2.7 Mio euros includes a German W2 position (equivalent to an assistant or untenured associate professorship), additional resources for the hiring of scientific staff and a budget to realize the project.
To submit your application online and for more details about the programme, please visit:
https://mprg.mpg.de
The deadline for applications is 14 October 2024.
For more information about the Max Planck Society and its institutes, please see:
https://www.mpg.de/en/
www.mpg.de
Apply now!
Apply to become a Max Planck Research Group Leader. Max Planck Research Groups - Announcement 2024.
🇵🇱 Postdoc position, Wroclaw, Poland 🇵🇱
The group of Prof. A. Sedrakian at the Institute of Theoretical Physics, University of Wroclaw invites applications to fill one postdoc position. The successful candidate is expected to work in one of the following fields:
1) transport and weak processes in dense baryon matter at high densities and temperatures characteristic for neutron star mergers
2) transport and neutrino interactions within hybrid stars containing different phases of deconfined quark matter.
3) relativistic hydrodynamics and application to neutron stars.
The position is for two years, with a possible extension for a third year upon satisfactory performance.
Researchers in theoretical astro and nuclear physics or related areas are encouraged to apply. The candidates should have a PhD degree by the starting date of 01.01.2025 or the date of mutual agreement.
Applications should include
1) CV and list of publications,
2) research statement,
3) and arrange for three letters of recommendation to be sent by references to armen.sedrakian@uwr.edu.pl
The group of Prof. A. Sedrakian at the Institute of Theoretical Physics, University of Wroclaw invites applications to fill one postdoc position. The successful candidate is expected to work in one of the following fields:
1) transport and weak processes in dense baryon matter at high densities and temperatures characteristic for neutron star mergers
2) transport and neutrino interactions within hybrid stars containing different phases of deconfined quark matter.
3) relativistic hydrodynamics and application to neutron stars.
The position is for two years, with a possible extension for a third year upon satisfactory performance.
Researchers in theoretical astro and nuclear physics or related areas are encouraged to apply. The candidates should have a PhD degree by the starting date of 01.01.2025 or the date of mutual agreement.
Applications should include
1) CV and list of publications,
2) research statement,
3) and arrange for three letters of recommendation to be sent by references to armen.sedrakian@uwr.edu.pl
🇺🇸 Postdoctoral position in cosmological survey science and machine learning 🇺🇸
The Division of Physics, Mathematics, and Astronomy at the California Institute of Technology seeks recent PhD scientists for a postdoctoral position in cosmological survey science and machine learning in Professor Kimmy Wu’s group. Candidates should have or expect to receive a Ph.D. in astrophysics or physics prior to starting their appointment. Experience in joint analysis of cosmic microwave background (CMB) data with other surveys (e.g. photometric, spectroscopic, line intensity mapping) and/or machine learning in the context of survey science/field-level inference will be an asset. Candidates with strong background in optical/LIM surveys or machine learning and an interest in their synergy with CMB observations are encouraged to apply. Please contact Kimmy Wu for more information on this position.
Applications and supporting credentials must be submitted through Academic Jobs Online. Candidates should upload their:
Cover letter
Curriculum vitae including a publication list
A 3-page research statement
And arrange to have at least three letters of reference submitted online.
Link to Online Application
https://academicjobsonline.org/ajo/jobs/28418
Publication Start Date
2024 Sep 13
Application Deadline
2024 Nov 15
The Division of Physics, Mathematics, and Astronomy at the California Institute of Technology seeks recent PhD scientists for a postdoctoral position in cosmological survey science and machine learning in Professor Kimmy Wu’s group. Candidates should have or expect to receive a Ph.D. in astrophysics or physics prior to starting their appointment. Experience in joint analysis of cosmic microwave background (CMB) data with other surveys (e.g. photometric, spectroscopic, line intensity mapping) and/or machine learning in the context of survey science/field-level inference will be an asset. Candidates with strong background in optical/LIM surveys or machine learning and an interest in their synergy with CMB observations are encouraged to apply. Please contact Kimmy Wu for more information on this position.
Applications and supporting credentials must be submitted through Academic Jobs Online. Candidates should upload their:
Cover letter
Curriculum vitae including a publication list
A 3-page research statement
And arrange to have at least three letters of reference submitted online.
Link to Online Application
https://academicjobsonline.org/ajo/jobs/28418
Publication Start Date
2024 Sep 13
Application Deadline
2024 Nov 15
academicjobsonline.org
California Institute of Technology, Physics, Mathematics & Astronomy Division
Full service online faculty recruitment and application management system for academic institutions worldwide. We offer unique solutions tailored for academic communities.
Forwarded from علم، فلسفه و الهیات
🔰انواع نظریات «چندجهانی» (جهان های موازی) در فیزیک
🔺شاید این جهانی که در آن زندگی میکنیم، تنها جهان فیزیکی موجود نباشد. بلکه، تنها یک جهان در بین جهانهای بیشمار دیگر باشد. به عبارت دیگر ما در یک «چندجهانی» قرار داشته باشیم. چندجهانی در شاخه های مختلفی از فیزیک نوین مطرح شده است. بنابراین ما چند نظریه چندجهانی متفاوت در فیزیک داریم، که برخی از مهمترین آنها عبارتند از:
🔹1- چندجهانی تورمی (inflationary multiverse): طبق نظریه تورم کیهانی، در لحظات ابتدایی کیهان، یک انبساط شتابدار بسیار شدید، در کسر ناچیزی از ثانیه، ابعاد کیهان را حداقل 10 به توان 120 برابر کرده است. با توقف این انبساط، جهانی که می شناسیم حاصل شده است. اما شاید این انبساط هیچگاه به صورت کلی خاتمه نیافته باشد، بلکه هر از گاهی تنها در نواحی خاصی خاتمه می یابد و جهان جدیدی را متولد می کند. گویی ما در یک اقیانوس بیکران قرار داریم که جهان ما تنها یک حباب در آن است و بی شمار حباب دیگر نیز موجود است.
🔸2- تعبیر بس جهانی از نظریه کوانتوم (Many-worlds interpretation): طبق این تفسیر از نظریه کوانتوم، در هنگام اندازه گیری یک حالت برهمنهی کوانتومی، جهان منشعب می شود و به ازای هر نتیجه ممکن برای اندازه گیری، یک جهان مجزا به وجود می آید. پس تعداد غیر قابل تصوری جهان موازی وجود دارد که تمامی حالات ممکن از نتایج مختلف اندازه گیری های کوانتومی را در بر میگیرند.
🔹3- چشم انداز نظریه ریسمان (String Theory Landscape) : در نظریه ریسمان به عنوان یک نظریه بنیادین فیزیکی، تقریباً 10 به توان 500 جواب مختلف برای معادلات وجود دارد، که هر یک معادل است با یک جهان منحصر به فرد، با اشکال متفاوتی از قوانین و ثوابت بنیادی فیزیکی. یکی از این جواب ها در جهان ما تحقق دارد. برخی معتقدند که سایر این جواب ها نیز در جهان های مخصوص به خود تحقق دارند.
🔸 4- چندجهانی تگمارک (Tegmark's Multiverse): ماکس تگمارک، استاد کیهان شناسی دانشگاه MIT، این نظریه را ارائه داده است که موجودات فیزیکی در اصل چیزی جز ساختارهای ریاضی نیستند. بنابراين، به ازای هر ساختار ریاضی سازگاری که در نظر بگیریم جهانی مخصوص به آن وجود دارد که آن ساختارهای ریاضی، قوانین فیزیکی آن جهان هستند. یعنی هر جهان فیزیکی با هر مجموعه از قوانین سازگاری که تصور کنیم، حتماً وجود دارد.
🔴 کانال علم، فلسفه و الهیات
🆔 @TheoCosmology
🔺شاید این جهانی که در آن زندگی میکنیم، تنها جهان فیزیکی موجود نباشد. بلکه، تنها یک جهان در بین جهانهای بیشمار دیگر باشد. به عبارت دیگر ما در یک «چندجهانی» قرار داشته باشیم. چندجهانی در شاخه های مختلفی از فیزیک نوین مطرح شده است. بنابراین ما چند نظریه چندجهانی متفاوت در فیزیک داریم، که برخی از مهمترین آنها عبارتند از:
🔹1- چندجهانی تورمی (inflationary multiverse): طبق نظریه تورم کیهانی، در لحظات ابتدایی کیهان، یک انبساط شتابدار بسیار شدید، در کسر ناچیزی از ثانیه، ابعاد کیهان را حداقل 10 به توان 120 برابر کرده است. با توقف این انبساط، جهانی که می شناسیم حاصل شده است. اما شاید این انبساط هیچگاه به صورت کلی خاتمه نیافته باشد، بلکه هر از گاهی تنها در نواحی خاصی خاتمه می یابد و جهان جدیدی را متولد می کند. گویی ما در یک اقیانوس بیکران قرار داریم که جهان ما تنها یک حباب در آن است و بی شمار حباب دیگر نیز موجود است.
🔸2- تعبیر بس جهانی از نظریه کوانتوم (Many-worlds interpretation): طبق این تفسیر از نظریه کوانتوم، در هنگام اندازه گیری یک حالت برهمنهی کوانتومی، جهان منشعب می شود و به ازای هر نتیجه ممکن برای اندازه گیری، یک جهان مجزا به وجود می آید. پس تعداد غیر قابل تصوری جهان موازی وجود دارد که تمامی حالات ممکن از نتایج مختلف اندازه گیری های کوانتومی را در بر میگیرند.
🔹3- چشم انداز نظریه ریسمان (String Theory Landscape) : در نظریه ریسمان به عنوان یک نظریه بنیادین فیزیکی، تقریباً 10 به توان 500 جواب مختلف برای معادلات وجود دارد، که هر یک معادل است با یک جهان منحصر به فرد، با اشکال متفاوتی از قوانین و ثوابت بنیادی فیزیکی. یکی از این جواب ها در جهان ما تحقق دارد. برخی معتقدند که سایر این جواب ها نیز در جهان های مخصوص به خود تحقق دارند.
🔸 4- چندجهانی تگمارک (Tegmark's Multiverse): ماکس تگمارک، استاد کیهان شناسی دانشگاه MIT، این نظریه را ارائه داده است که موجودات فیزیکی در اصل چیزی جز ساختارهای ریاضی نیستند. بنابراين، به ازای هر ساختار ریاضی سازگاری که در نظر بگیریم جهانی مخصوص به آن وجود دارد که آن ساختارهای ریاضی، قوانین فیزیکی آن جهان هستند. یعنی هر جهان فیزیکی با هر مجموعه از قوانین سازگاری که تصور کنیم، حتماً وجود دارد.
🔴 کانال علم، فلسفه و الهیات
🆔 @TheoCosmology
School of Particles and Accelerators
Journal Club: Experiments & Phenomenology / Hybrid Format
Date:
Monday, Sep 23, 2024 / دوشنبه، 2 مهر 1403
Time:
11:00 AM - 12:00 PM (Tehran time)
Speaker:
Dr. Mohammad Asadi
Affiliation:
School of Particles and Accelerators, IPM
Title:
The entanglement of purification as a measure of non-conformality
Title in Persian:
درهمتنیدگی خالص سازی بعنوان ابزاری برای تعیین رفتار غیرهمدیس تئوری
Abstract:
We have studied the entanglement of purification Ep in a non-conformal holographic model which is a five-dimensional Einstein gravity coupled to a scalar field ϕ with a non-trivial potential V (ϕ). The dual 4-dimensional gauge theory is not conformal and exhibits a RG flow between two different fixed points. There are three parameters including energy scale Λ, model parameter ϕM and temperature T which control the behaviour of the theory. Interestingly, we have found that Ep can be used as a measure to probe the non-conformal behavior of the theory at both zero and finite temperature.
Based on: https://arxiv.org/pdf/2408.05522
Meeting Place: Seminar Room, School of Particles and Accelerators, IPM
Link to Join Virtually: https://www.skyroom.online/ch/ipm-particles/journal-club
Journal Club: Experiments & Phenomenology / Hybrid Format
Date:
Monday, Sep 23, 2024 / دوشنبه، 2 مهر 1403
Time:
11:00 AM - 12:00 PM (Tehran time)
Speaker:
Dr. Mohammad Asadi
Affiliation:
School of Particles and Accelerators, IPM
Title:
The entanglement of purification as a measure of non-conformality
Title in Persian:
درهمتنیدگی خالص سازی بعنوان ابزاری برای تعیین رفتار غیرهمدیس تئوری
Abstract:
We have studied the entanglement of purification Ep in a non-conformal holographic model which is a five-dimensional Einstein gravity coupled to a scalar field ϕ with a non-trivial potential V (ϕ). The dual 4-dimensional gauge theory is not conformal and exhibits a RG flow between two different fixed points. There are three parameters including energy scale Λ, model parameter ϕM and temperature T which control the behaviour of the theory. Interestingly, we have found that Ep can be used as a measure to probe the non-conformal behavior of the theory at both zero and finite temperature.
Based on: https://arxiv.org/pdf/2408.05522
Meeting Place: Seminar Room, School of Particles and Accelerators, IPM
Link to Join Virtually: https://www.skyroom.online/ch/ipm-particles/journal-club
🇩🇰 PhD scholarship in Exoplanets 🇩🇰
The Exoplanet Group at DTU Space at the Technical University of Denmark, situated in the greater Copenhagen area, invites applications for PhD a scholarship in exoplanet research. The Exoplanet Group is extensively engaged in the detection and characterization of exoplanets through observations and modelling. Our group has a particular interest in atmospheric studies of terrestrial and sub-Neptune exoplanets and extreme prevision radial velocities, but candidates with interests in broader exoplanet areas are also encouraged to apply.
The successful candidate will work with Prof. Lars A. Buchhave and Dr. Alexander Rathcke in the rapidly growing Exoplanet Group. At DTU Space, the candidate will have access to data from world-class telescopes, including JWST, HST, ultra precise RV spectrographs (e.g., HARPS-N and EXPRES), and the VLT.
Link to Online Application
https://efzu.fa.em2.oraclecloud.com/hcmUI/CandidateExperience/en/sites/CX_1/job/4073/?utm_medium=jobshare
Publication Start Date
2024 Sep 17
Application Deadline
2024 Oct 18
The Exoplanet Group at DTU Space at the Technical University of Denmark, situated in the greater Copenhagen area, invites applications for PhD a scholarship in exoplanet research. The Exoplanet Group is extensively engaged in the detection and characterization of exoplanets through observations and modelling. Our group has a particular interest in atmospheric studies of terrestrial and sub-Neptune exoplanets and extreme prevision radial velocities, but candidates with interests in broader exoplanet areas are also encouraged to apply.
The successful candidate will work with Prof. Lars A. Buchhave and Dr. Alexander Rathcke in the rapidly growing Exoplanet Group. At DTU Space, the candidate will have access to data from world-class telescopes, including JWST, HST, ultra precise RV spectrographs (e.g., HARPS-N and EXPRES), and the VLT.
Link to Online Application
https://efzu.fa.em2.oraclecloud.com/hcmUI/CandidateExperience/en/sites/CX_1/job/4073/?utm_medium=jobshare
Publication Start Date
2024 Sep 17
Application Deadline
2024 Oct 18
DTU Career Site
PhD scholarship in Exoplanets - DTU Space
PhD scholarship in exoplanets at the Exoplanet Group, DTU Space, Technical University of Denmark. The Exoplanet Group is extensively engaged in the detection and characterization of exoplanets through observations and modelling.
🪞The Large Hadron Collider exposes quarks’ quantum entanglement:
Top quarks and antiquarks can be linked, a CERN study shows🪞
Link
@PDATLAB
Top quarks and antiquarks can be linked, a CERN study shows🪞
Link
@PDATLAB
Science News
The Large Hadron Collider exposes quarks’ quantum entanglement
Top quarks and antiquarks produced in the Large Hadron Collider are entangled, a study shows.
✳️ Square Kilometer Array, world’s largest radio telescope in making, becomes partially functional ✳️
Link
@PDATLAB
Link
@PDATLAB
The Indian Express
Square Kilometer Array, world’s largest radio telescope in making, becomes partially functional
Square Kilometer Array or SKA is an international science project with headquarters in UK; India became a member of SKA in December 2022.
Forwarded from Particle Physics (Fatemeh Irani)
«سیری در نظریه پیچیدگی» کتابی از ملانی میچل است که به دنیای پیچیده سیستمهای پیچیده میپردازد.
این کتاب، که توسط رضا امیر رحیمی به فارسی ترجمه شده، به بررسی ایدههای بنیادی سیستمهای پیچیده، تحقیقات پیشرفته در این زمینه و تأثیر بالقوه نظریهی پیچیدگی در حل مسائل دنیای واقعی میپردازد.
لینک زیر جلسات بحث در مورد این کتاب در دانشکدهی اقتصاد دانشگاه تهران است:
https://youtu.be/CRH1cHi8UWE?si=wrA88fbyS7bZCAs4
این کتاب، که توسط رضا امیر رحیمی به فارسی ترجمه شده، به بررسی ایدههای بنیادی سیستمهای پیچیده، تحقیقات پیشرفته در این زمینه و تأثیر بالقوه نظریهی پیچیدگی در حل مسائل دنیای واقعی میپردازد.
لینک زیر جلسات بحث در مورد این کتاب در دانشکدهی اقتصاد دانشگاه تهران است:
https://youtu.be/CRH1cHi8UWE?si=wrA88fbyS7bZCAs4
School of Particles and Accelerators
Wednesday Weekly Seminar – Hybrid Format
Date:
Wednesday, Sep 25, 2024 / چهارشنبه، 4 مهر 1403
Time:
11:00 AM - 12:00 PM (Tehran time)
Speaker:
Dr. Farid Taghinavaz
Affiliation:
School of Particles and Accelerators, IPM
Title:
Study of linearized fluctuating hydrodynamics via random polynomials
Title in Persian:
مطالعه هیدرودینامیک اختلالی خطی شده به کمک توابع تصادفی
Abstract:
Recently, and due to some experimental observations, such as the collectivity in the collision of small hadrons like proton+proton or proton+lead, the use of Relativistic Hydrodynamics in its old form in modeling the collision of heavy ions has encountered some challenges. We will discuss these challenges and also address the new observations in the collision of small systems. We will then show how we can bring together the fluctuation and the analytical requirements to reproduce the real propagation modes. The role of the fluctuation is crucial and it turns out that with its help we can make the non-hydrodynamic modes in such systems vanish or fade out.
Based on: https://arxiv.org/abs/2408.01742
Indico Link: https://indico.hep.ipm.ir/e/f.taghinavaz1
Meeting Place: Seminar Room, School of Particles and Accelerators, IPM
Link to Join Virtually: https://meet.google.com/bda-vsem-tuv
Wednesday Weekly Seminar – Hybrid Format
Date:
Wednesday, Sep 25, 2024 / چهارشنبه، 4 مهر 1403
Time:
11:00 AM - 12:00 PM (Tehran time)
Speaker:
Dr. Farid Taghinavaz
Affiliation:
School of Particles and Accelerators, IPM
Title:
Study of linearized fluctuating hydrodynamics via random polynomials
Title in Persian:
مطالعه هیدرودینامیک اختلالی خطی شده به کمک توابع تصادفی
Abstract:
Recently, and due to some experimental observations, such as the collectivity in the collision of small hadrons like proton+proton or proton+lead, the use of Relativistic Hydrodynamics in its old form in modeling the collision of heavy ions has encountered some challenges. We will discuss these challenges and also address the new observations in the collision of small systems. We will then show how we can bring together the fluctuation and the analytical requirements to reproduce the real propagation modes. The role of the fluctuation is crucial and it turns out that with its help we can make the non-hydrodynamic modes in such systems vanish or fade out.
Based on: https://arxiv.org/abs/2408.01742
Indico Link: https://indico.hep.ipm.ir/e/f.taghinavaz1
Meeting Place: Seminar Room, School of Particles and Accelerators, IPM
Link to Join Virtually: https://meet.google.com/bda-vsem-tuv
arXiv.org
Linearized fluctuating hydrodynamics via random polynomials
We argue that an ensemble of backgrounds best understands hydrodynamic dispersion relations in a medium with few degrees of freedom and is therefore subject to strong thermal fluctuations. In the...
Forwarded from انجمن فیزیک ایران
✅ نشست دویست و هفدهم باشگاه فیزیک تهران
#اخبار_انجمن_فیزیک_ایران
نشست دویست و هفدهم باشگاه فیزیک تهران روز سهشنبه سوم همر ماه ۱۴۰۳ به صورت حضوری در سالن آمفی تئاتر دانشکده فیزیک دانشگاه تهران برگزار میشود. برنامه ساعت ۱۵:۳۰با اخبار فیزیک و مسابقه آغاز می شود. سخنران این نشست دکتر صالح رحیمی از دانشکده فیزیک دانشگاه تهران هستند و درباره « نقش تداخل کوانتومی در ...
📣 متن کامل را در Instant View ⚡️ (دکمه پایین صفحه) و یا در وبگاه انجمن فیزیک ایران بخوانید:
🚩http://www.psi.ir/news2_fa.asp?id=4116
⏪ وبگاه انجمن فیزیک ایران:
🌍 http://www.psi.ir
✅ به کانال خبرى انجمن فیزیک ايران بپيوندید:
👇👇🏽👇👇🏽👇👇🏽👇
http://t.me/psinews
#اخبار_انجمن_فیزیک_ایران
نشست دویست و هفدهم باشگاه فیزیک تهران روز سهشنبه سوم همر ماه ۱۴۰۳ به صورت حضوری در سالن آمفی تئاتر دانشکده فیزیک دانشگاه تهران برگزار میشود. برنامه ساعت ۱۵:۳۰با اخبار فیزیک و مسابقه آغاز می شود. سخنران این نشست دکتر صالح رحیمی از دانشکده فیزیک دانشگاه تهران هستند و درباره « نقش تداخل کوانتومی در ...
📣 متن کامل را در Instant View ⚡️ (دکمه پایین صفحه) و یا در وبگاه انجمن فیزیک ایران بخوانید:
🚩http://www.psi.ir/news2_fa.asp?id=4116
⏪ وبگاه انجمن فیزیک ایران:
🌍 http://www.psi.ir
✅ به کانال خبرى انجمن فیزیک ايران بپيوندید:
👇👇🏽👇👇🏽👇👇🏽👇
http://t.me/psinews
t.me
نشست دویست و هفدهم باشگاه فیزیک تهران
🇸🇪 PhD position in galactic Astrophysics 🇸🇪
We invite applications for a PhD position at the Division of Astronomy and Plasma Physics at Chalmers University of Technology. Join our dynamic research team to explore the role of magnetic fields and cosmic rays in shaping the interstellar medium of galaxies, and contribute to advancing our understanding of galactic astrophysics.
Project denoscription
You will work in the group of Asst. Prof. Gina Panopoulou. The group specializes in observational studies of interstellar magnetism as part of the division of Astronomy and Plasma Physics. The research project will involve the use of observations from radio telescopes probing magnetic fields and cosmic rays. The main aim will be to develop methods for inferring the properties of these galactic components from observations. The methods will be tested on existing magneto-hydro-dynamical simulations of galaxies.
Major responsibilities
conduct research (data analysis, software development, writing publications, studying literature, presenting at conferences),
complete courses in Astrophysics as well as transferable skills courses,
collaborate within international networks (e.g. SKA).
Research in the division covers a broad range of topics, including interstellar medium, star formation, galaxy evolution, evolved stars and exoplanets. PhD education at Chalmers offers a wide range of opportunities for career development, providing connections to astronomers in diverse fields, training in pedagogy, leadership, research ethics and an engaging and supportive work environment. As part of the PhD education, students conduct research and complete coursework covering advanced topics in Astrophysics.
For more information on the opening and how to apply, follow the link to the Chalmers job vacancies page:
https://www.chalmers.se/en/about-chalmers/work-with-us/vacancies/?rmpage=job&rmjob=13222&rmlang=UK
We invite applications for a PhD position at the Division of Astronomy and Plasma Physics at Chalmers University of Technology. Join our dynamic research team to explore the role of magnetic fields and cosmic rays in shaping the interstellar medium of galaxies, and contribute to advancing our understanding of galactic astrophysics.
Project denoscription
You will work in the group of Asst. Prof. Gina Panopoulou. The group specializes in observational studies of interstellar magnetism as part of the division of Astronomy and Plasma Physics. The research project will involve the use of observations from radio telescopes probing magnetic fields and cosmic rays. The main aim will be to develop methods for inferring the properties of these galactic components from observations. The methods will be tested on existing magneto-hydro-dynamical simulations of galaxies.
Major responsibilities
conduct research (data analysis, software development, writing publications, studying literature, presenting at conferences),
complete courses in Astrophysics as well as transferable skills courses,
collaborate within international networks (e.g. SKA).
Research in the division covers a broad range of topics, including interstellar medium, star formation, galaxy evolution, evolved stars and exoplanets. PhD education at Chalmers offers a wide range of opportunities for career development, providing connections to astronomers in diverse fields, training in pedagogy, leadership, research ethics and an engaging and supportive work environment. As part of the PhD education, students conduct research and complete coursework covering advanced topics in Astrophysics.
For more information on the opening and how to apply, follow the link to the Chalmers job vacancies page:
https://www.chalmers.se/en/about-chalmers/work-with-us/vacancies/?rmpage=job&rmjob=13222&rmlang=UK
www.chalmers.se
Vacancies
Forwarded from انجمن علمی ژرفا
circle-and-square.pdf
1.6 MB
🔰 «دایره یا مربع، کدام متقارنتر است؟»
در این مقاله برای پاسخ به سؤال مطرح شده که از میان دایره و مربع کدام یک متقارنتر است، ابتدا درباره تعریفی از تقارن صحبت میشود و گروه تقارنهای این اشکال بررسی میگردد. هدف از این بررسی آن است که فضای دارای گروه تقارن بزرگتر، متقارنتر محسوب شود. در ادامه گروه تقارنهای مکعب و کرۀ دوبعدی نیز مورد مقایسه قرار میگیرد. همچنین نویسنده به سوالاتی پیرامون نگاشتهای حافظ اندازه روی این اشیاء پرداخته است.
👤 دکتر آرش رستگار
📚 شماره ۶۹ نشریه فرهنگ و اندیشه ریاضی
🆔 @Zharfa90
در این مقاله برای پاسخ به سؤال مطرح شده که از میان دایره و مربع کدام یک متقارنتر است، ابتدا درباره تعریفی از تقارن صحبت میشود و گروه تقارنهای این اشکال بررسی میگردد. هدف از این بررسی آن است که فضای دارای گروه تقارن بزرگتر، متقارنتر محسوب شود. در ادامه گروه تقارنهای مکعب و کرۀ دوبعدی نیز مورد مقایسه قرار میگیرد. همچنین نویسنده به سوالاتی پیرامون نگاشتهای حافظ اندازه روی این اشیاء پرداخته است.
👤 دکتر آرش رستگار
📚 شماره ۶۹ نشریه فرهنگ و اندیشه ریاضی
🆔 @Zharfa90
🇩🇪 Postdoctoral Position in Machine Learning and Astrophysics/Cosmology 🇩🇪
We invite applications for a postdoctoral position in machine learning and astrophysics/cosmology at the Institute for Theoretical Physics (ITP) at Heidelberg University to work in the Machine Learning and observational cosmology research group led by Dr. Caroline Heneka.
The postdoctoral researcher will contribute to an active research program on the deveopment of state-of-the-art machine learning methods for astrophysics and cosmology. Particular applications concern large radio surveys, multi-line intensity mapping and the study of the Epoch of Reionisation. The postdoc will lead the development of ML models for generative, inference (SBI) and further typical downstream tasks. The applicant is expected to have up-to-date research experience in modern machine methods and deep learning architectures. A research background in large radio surveys, computational astrophysics, or computer science in general will also be considered favourably. The researcher will have the opportunity to supervise and mentor students.
Interested applicants should send a cover letter, CV, publication list, and a brief research statement (max. 3
pages) as a single pdf file to heneka@thphys.uni-heidelberg.de with subject 'Postdoc ML' and arrange for three letters of reference to be sent separately to the same email address. Applications submitted by October 30th will receive full consideration. Later applications will be considered until the position is filled.
We invite applications for a postdoctoral position in machine learning and astrophysics/cosmology at the Institute for Theoretical Physics (ITP) at Heidelberg University to work in the Machine Learning and observational cosmology research group led by Dr. Caroline Heneka.
The postdoctoral researcher will contribute to an active research program on the deveopment of state-of-the-art machine learning methods for astrophysics and cosmology. Particular applications concern large radio surveys, multi-line intensity mapping and the study of the Epoch of Reionisation. The postdoc will lead the development of ML models for generative, inference (SBI) and further typical downstream tasks. The applicant is expected to have up-to-date research experience in modern machine methods and deep learning architectures. A research background in large radio surveys, computational astrophysics, or computer science in general will also be considered favourably. The researcher will have the opportunity to supervise and mentor students.
Interested applicants should send a cover letter, CV, publication list, and a brief research statement (max. 3
pages) as a single pdf file to heneka@thphys.uni-heidelberg.de with subject 'Postdoc ML' and arrange for three letters of reference to be sent separately to the same email address. Applications submitted by October 30th will receive full consideration. Later applications will be considered until the position is filled.
Forwarded from String Theory & Holography (Mehdi Ameri)
Advanced Mathematical Methods For Physicists.pdf
168.2 MB
🔸 جزوه:
"روشهای پیشرفته ریاضی برای فیزیکدانان نظری"
شامل مباحثی مثل:
آشنایی با هندسه و فرمهای دیفرانسیلی
خواص فضاهای توپولوژیک
ابرتقارن
رویههای Calabi-Yau
و غیره
🔹براساس لکچرهای هیروچی اوگوری
.
@sth_fum
"روشهای پیشرفته ریاضی برای فیزیکدانان نظری"
شامل مباحثی مثل:
آشنایی با هندسه و فرمهای دیفرانسیلی
خواص فضاهای توپولوژیک
ابرتقارن
رویههای Calabi-Yau
و غیره
🔹براساس لکچرهای هیروچی اوگوری
.
@sth_fum
Forwarded from انجمن فیزیک ایران
✅ جتهای سیاهچالهای آنقدر عظیم هستند که ممکن است علم کیهانشناسی را دگرگون کنند
#اخبار_علمی_و_پژوهشی
بزرگترین جتهای سیاهچالهای که تاکنون مشاهده شدهاند، نشان میدهند که این هیولاهای کیهانی ممکن است نقشی حتی مهمتر از آنچه که قبلاً تصور میشد در شکلگیری کهکشانها ایفا کنند. ستارهشناسان، بزرگترین جفت جتهای سیاهچالهای که تاکنون رصد شدهاند را کشف کردهاند. این جتها با طول ۲۳ میلیون سال ...
📣 متن کامل را در Instant View ⚡️ (دکمه پایین صفحه) و یا در وبگاه انجمن فیزیک ایران بخوانید:
🚩http://www.psi.ir/news2_fa.asp?id=4117
⏪ وبگاه انجمن فیزیک ایران:
🌍 http://www.psi.ir
✅ به کانال خبرى انجمن فیزیک ايران بپيوندید:
👇👇🏽👇👇🏽👇👇🏽👇
http://t.me/psinews
#اخبار_علمی_و_پژوهشی
بزرگترین جتهای سیاهچالهای که تاکنون مشاهده شدهاند، نشان میدهند که این هیولاهای کیهانی ممکن است نقشی حتی مهمتر از آنچه که قبلاً تصور میشد در شکلگیری کهکشانها ایفا کنند. ستارهشناسان، بزرگترین جفت جتهای سیاهچالهای که تاکنون رصد شدهاند را کشف کردهاند. این جتها با طول ۲۳ میلیون سال ...
📣 متن کامل را در Instant View ⚡️ (دکمه پایین صفحه) و یا در وبگاه انجمن فیزیک ایران بخوانید:
🚩http://www.psi.ir/news2_fa.asp?id=4117
⏪ وبگاه انجمن فیزیک ایران:
🌍 http://www.psi.ir
✅ به کانال خبرى انجمن فیزیک ايران بپيوندید:
👇👇🏽👇👇🏽👇👇🏽👇
http://t.me/psinews
t.me
جتهای سیاهچالهای آنقدر عظیم هستند که ممکن است علم کیهانشناسی را دگرگون کنند
🇮🇹 Postdoc position in Statistical Field Theory in Florence 🇮🇹
We are going to have a 2-year INFN postdoc position in Florence. The deadline for application is November 15. The starting date is in the fall 2025 or earlier. The position is open to non-Italian applicants and Italians which have been abroad for 3 consecutive years at the time of the deadline. See attached announcement, the position is called, `Statistical Field Theory' the name of the italian INFN network we are in. The research activities in our group are: - topological phases of matter, conformal bootstrap (Andrea Cappelli) - integrable systems, matrix models (Filippo Colomo) - quantum information, quantum computation (Leonardo Banchi, Paola Verrucchi) See also: https://web.infn.it/CSN4/index.php/it/17-esperimenti/124-sft-news Please circulate among possible candidates.
We are going to have a 2-year INFN postdoc position in Florence. The deadline for application is November 15. The starting date is in the fall 2025 or earlier. The position is open to non-Italian applicants and Italians which have been abroad for 3 consecutive years at the time of the deadline. See attached announcement, the position is called, `Statistical Field Theory' the name of the italian INFN network we are in. The research activities in our group are: - topological phases of matter, conformal bootstrap (Andrea Cappelli) - integrable systems, matrix models (Filippo Colomo) - quantum information, quantum computation (Leonardo Banchi, Paola Verrucchi) See also: https://web.infn.it/CSN4/index.php/it/17-esperimenti/124-sft-news Please circulate among possible candidates.
web.infn.it
SFT News
sito della CSN4, INFN fisica teorica,
Random Matrix Gravity and Double Hierarchy Problem
Nima Khosravi
Department of Physics, Sharif University of Technology,
Department of Physics, Shahid Beheshti University
Abstract:
Why are the cosmological constant, electroweak and Planck scales so different? This ``double hierarchy" problem, where Λ≪M^2_EW≪M^2_p, is one of the most pressing in fundamental physics. We show that in a theory of N randomly coupled massive gravitons at the electroweak scale, these scales are linked precisely by such a double hierarchy for large N, with intriguing cosmological consequences. Surprisingly, in all the physical scales, only one massless graviton emerges which is also, effectively, the only one that is coupled to matter, giving rise to standard Einstein gravity, with M^2_pGμν=Tμν at large N. In addition, there is a tower of massive gravitons, the lightest of which can drive late-time acceleration. In this scenario, the observed empirical relation ΛMp^2∼M_EW^4 as well as the double hierarchy, arise naturally since since Λ ∼ M_EW^2/√(N) and Mp^2 ∼ √(N)M_EW^2.
یکشنبه 8 مهر 1403، ساعت 17:00
Sunday 29 September 2024 – 17:00 Tehran Time
Hybrid Seminar
دانشکده فیزیک – طبقه اول – کلاس فیزیک 3 Physics Department – first floor – Room Physics 3 /
https://vc.sharif.edu/ch/cosmology
Nima Khosravi
Department of Physics, Sharif University of Technology,
Department of Physics, Shahid Beheshti University
Abstract:
Why are the cosmological constant, electroweak and Planck scales so different? This ``double hierarchy" problem, where Λ≪M^2_EW≪M^2_p, is one of the most pressing in fundamental physics. We show that in a theory of N randomly coupled massive gravitons at the electroweak scale, these scales are linked precisely by such a double hierarchy for large N, with intriguing cosmological consequences. Surprisingly, in all the physical scales, only one massless graviton emerges which is also, effectively, the only one that is coupled to matter, giving rise to standard Einstein gravity, with M^2_pGμν=Tμν at large N. In addition, there is a tower of massive gravitons, the lightest of which can drive late-time acceleration. In this scenario, the observed empirical relation ΛMp^2∼M_EW^4 as well as the double hierarchy, arise naturally since since Λ ∼ M_EW^2/√(N) and Mp^2 ∼ √(N)M_EW^2.
یکشنبه 8 مهر 1403، ساعت 17:00
Sunday 29 September 2024 – 17:00 Tehran Time
Hybrid Seminar
دانشکده فیزیک – طبقه اول – کلاس فیزیک 3 Physics Department – first floor – Room Physics 3 /
https://vc.sharif.edu/ch/cosmology
🇩🇪 Postdoctoral position on Cosmology and Artificial Intelligence 🇩🇪
We seek to appoint a three-year postdoctoral researcher to conduct original research in the areas of cosmology and artificial intelligence, with focus on large-scale structure. The successful applicant will be part of the newly formed research group led by Professor Luisa Lucie-Smith at the University of Hamburg, Germany. The successful applicant will conduct original research to advance machine learning approaches in cosmological research, broadly related to topics such as modelling of the large-scale structure, the galaxy-halo connection and testing open questions in fundamental physics.
Candidates with existing expertise in computational modelling, numerical simulations, developing and applying novel statistical and machine learning techniques will be highly valued; an understanding or experience in the area of explainable artificial intelligence will also be advantageous. German language skills are not required.
The University values and actively supports equality, diversity and inclusion and strongly welcomes applications from women and underrepresented minorities.
The successful applicant will be based on the Hamburg Observatory campus situated south of the city of Hamburg. Scientists at Hamburg Observatory cover a wide range of research areas of modern astrophysics, such as extragalactic astronomy, cosmology, galaxy formation, gravitational waves and statistical analysis including artificial intelligence. Our 9 individual research groups provide a diverse and stimulating research environment. Furthermore, the successful candidate will be able to benefit from the Observatory's close ties with other research institutes in Hamburg, including DESY and the Cluster of Excellence "Quantum Universe". Generous computing resources as well as travel funding will be available to the successful candidate.
The term of employment is for three years, with an anticipated starting date in 2025.
Interested candidates are invited to apply via email to luisals@mpa-garching.mpg.de. Candidates should send (1) a curriculum vitae, including names and email addresses of two or three references; (2) publication list; (3) cover letter; and (4) a research statement (3xA4 pages max, 11pt font) by December 1, 2024. Also arrange for at least two letters of recommendation to be submitted via email by December 1, 2024. Late applications will be accepted until the post is filled.
Publication Start Date
2024 Sep 25
Application Deadline
2024 Dec 01
We seek to appoint a three-year postdoctoral researcher to conduct original research in the areas of cosmology and artificial intelligence, with focus on large-scale structure. The successful applicant will be part of the newly formed research group led by Professor Luisa Lucie-Smith at the University of Hamburg, Germany. The successful applicant will conduct original research to advance machine learning approaches in cosmological research, broadly related to topics such as modelling of the large-scale structure, the galaxy-halo connection and testing open questions in fundamental physics.
Candidates with existing expertise in computational modelling, numerical simulations, developing and applying novel statistical and machine learning techniques will be highly valued; an understanding or experience in the area of explainable artificial intelligence will also be advantageous. German language skills are not required.
The University values and actively supports equality, diversity and inclusion and strongly welcomes applications from women and underrepresented minorities.
The successful applicant will be based on the Hamburg Observatory campus situated south of the city of Hamburg. Scientists at Hamburg Observatory cover a wide range of research areas of modern astrophysics, such as extragalactic astronomy, cosmology, galaxy formation, gravitational waves and statistical analysis including artificial intelligence. Our 9 individual research groups provide a diverse and stimulating research environment. Furthermore, the successful candidate will be able to benefit from the Observatory's close ties with other research institutes in Hamburg, including DESY and the Cluster of Excellence "Quantum Universe". Generous computing resources as well as travel funding will be available to the successful candidate.
The term of employment is for three years, with an anticipated starting date in 2025.
Interested candidates are invited to apply via email to luisals@mpa-garching.mpg.de. Candidates should send (1) a curriculum vitae, including names and email addresses of two or three references; (2) publication list; (3) cover letter; and (4) a research statement (3xA4 pages max, 11pt font) by December 1, 2024. Also arrange for at least two letters of recommendation to be submitted via email by December 1, 2024. Late applications will be accepted until the post is filled.
Publication Start Date
2024 Sep 25
Application Deadline
2024 Dec 01
School of Particles and Accelerators
Journal Club: Experiments & Phenomenology / Hybrid Format
Date:
Monday, Sep 30, 2024 / دوشنبه، 9 مهر 1403
Time:
11:00 AM - 12:00 PM (Tehran time)
Speaker:
Dr. Motahareh Kiamari
Affiliation:
School of Particles and Accelerators, IPM
Title:
Chiral symmetry breaking and monopoles in gauge theories
Title in Persian:
شکست تقارن کایرال و تک قطبی ها در نظریه های پیمانه ای
Abstract:
QCD monopoles are magnetically charged quasiparticles whose Bose-Einstein condensation (BEC) at T<Tc creates electric confinement and flux tubes. The “magnetic scenario” of QCD proposes that scattering on the non-condensed component of the monopole ensemble at T>Tc plays an important role in explaining the properties of strongly coupled quark-gluon plasma (sQGP) near the deconfinement temperature. In this paper, we study the phenomenon of chiral symmetry breaking and its relation to magnetic monopoles. Specifically, we study the eigenvalue spectrum of the Dirac operator in the basis of fermionic zero modes in an SU(2) monopole background. We find that as the temperature approaches the deconfinement temperature ω=0 from above, the eigenvalue spectrum has a finite density at ω=0, indicating the presence of a chiral condensate. In addition, we find the critical scaling of the eigenvalue gap to be consistent with that of the correlation length in the 3d Ising model and the BEC transition of monopoles on the lattice.
Based on: https://arxiv.org/abs/1801.06922
Meeting Place: Seminar Room, School of Particles and Accelerators, IPM
Link to Join Virtually: https://www.skyroom.online/ch/ipm-particles/journal-club
Journal Club: Experiments & Phenomenology / Hybrid Format
Date:
Monday, Sep 30, 2024 / دوشنبه، 9 مهر 1403
Time:
11:00 AM - 12:00 PM (Tehran time)
Speaker:
Dr. Motahareh Kiamari
Affiliation:
School of Particles and Accelerators, IPM
Title:
Chiral symmetry breaking and monopoles in gauge theories
Title in Persian:
شکست تقارن کایرال و تک قطبی ها در نظریه های پیمانه ای
Abstract:
QCD monopoles are magnetically charged quasiparticles whose Bose-Einstein condensation (BEC) at T<Tc creates electric confinement and flux tubes. The “magnetic scenario” of QCD proposes that scattering on the non-condensed component of the monopole ensemble at T>Tc plays an important role in explaining the properties of strongly coupled quark-gluon plasma (sQGP) near the deconfinement temperature. In this paper, we study the phenomenon of chiral symmetry breaking and its relation to magnetic monopoles. Specifically, we study the eigenvalue spectrum of the Dirac operator in the basis of fermionic zero modes in an SU(2) monopole background. We find that as the temperature approaches the deconfinement temperature ω=0 from above, the eigenvalue spectrum has a finite density at ω=0, indicating the presence of a chiral condensate. In addition, we find the critical scaling of the eigenvalue gap to be consistent with that of the correlation length in the 3d Ising model and the BEC transition of monopoles on the lattice.
Based on: https://arxiv.org/abs/1801.06922
Meeting Place: Seminar Room, School of Particles and Accelerators, IPM
Link to Join Virtually: https://www.skyroom.online/ch/ipm-particles/journal-club
arXiv.org
Chiral symmetry breaking and monopoles in gauge theories
QCD monopoles are magnetically charged quasiparticles whose Bose-Einstein condensation (BEC) at $T<T_c$ creates electric confinement and flux tubes. The "magnetic scenario" of QCD proposes that...