سخنران: A. Maleki, Sharif University of Technology

31 تیر 1404
11:00 تا 12:00

Date and time

Tuesday, July 22nd, 2025 (31 Tir), 11:00 AM (Tehran zone)




Link

https://www.skyroom.online/ch/schoolofphysics/highenergyseminar


Abstract


This talk addresses the intersection of physics at the smallest and largest scales, where quantum mechanics meets cosmology. We highlight the relevance of this interplay to foundational problems in both cosmology and high energy physics. Our discussion spans the potential quantum features manifesting at galactic or cosmological scales, as well as the role of quantum interferometry in enabling ultra-sensitive measurements in high-energy experiments. These experimental advances not only push the boundaries of precision measurement (such as the detection of gravitational waves), but also open promising avenues for probing quantum aspects of gravity, one of the most profound unresolved questions in theoretical physics.

Link: https://www.skyroom.online/ch/schoolofphysics/highenergyseminar

سخنران: دکتر بهراد تقوی - پژوهشکده ذرات و شتابگرها

30 تیر 1404
11:00 تا 12:00

نابهنجاری (همدیس) چیست؟



Link: https://www.skyroom.online/ch/ipm-particles/journal-club

سخنران: روح الله جعفری

25 تیر 1404
14:00 تا 15:00

چکیده:

We study the impact of noise on the dynamics of entanglement in the transverse-field Ising chain, with the field quenched linearly across one or both of the quantum critical points of the model. Taking concurrence as a measure of entanglement, we find that a quench generates entanglement between nearest- and next-nearest-neighbor spins, with noise reducing the amount of entanglement. Focusing on the next nearest-neighbor concurrence, known to exhibit Kibble-Zurek scaling with the square root of the quench rate in the noiseless case, we find a different result when noise is present: The concurrence now scales logarithmically with the quench rate, with a noise-dependent amplitude. This is also different from the anti-Kibble-Zurek scaling of defect density with quench rate when noise is present, suggesting that noisy entanglement generation is largely independent from the rate of defect formation. Intriguingly, the critical time scale beyond which no entanglement is produced by a noisy quench scales as a power law with the strength of noise, with the same exponent as that which governs the optimal quench time for which defect formation is at a minimum in a standard quantum annealing scheme.


لینک حضور آنلاین در سمینار


https://vmeeting2.ipm.ir/b/nan-gkn-wmh-exh

Link: http://qpm.ipm.ac.ir/

سخنران: دکتر سمیه محمودی - پژوهشگاه دانش های بنیادی، پژوهشکده ذرات و شتابگرها

25 تیر 1404
11:00 تا 12:00

دوشکستی کیهانی: ابزاری برای کاوش در ماهیت مادهً تاریک

Link: https://www.skyroom.online/ch/ipm-particles/weekly-seminar

سخنران: V. Kamali, McGill University

24 تیر 1404
14:00 تا 15:00

Date and time

Tuesday, July 15th, 2025 (24 Tir), 2:00 pm (Tehran zone)




Link

https://www.skyroom.online/ch/schoolofphysics/highenergyseminar


Abstract

In this talk, I will explain a model of warm inflation driven by axion-like particles interacting with $U(1)$ gauge fields, with implications for the early universe's thermal evolution. By extending traditional warm inflation models, we introduce a dissipation mechanism through the thermal fluctuations of electromagnetic fields, leading to a non-trivial backreaction on the inflaton's dynamics. Our results are consistent with CMB observations, even for a natural sub-Plankian Axion decay constant $f
Link: https://www.skyroom.online/ch/schoolofphysics/highenergyseminar

سخنران: دکتر فرید تقی نواز - پژوهشکده ذرات و شتابگرها

23 تیر 1404
11:00 تا 12:00

امکان تفسیرهیدرودینامیکی برای نواحی نزدیک به نقاط ثابت غیردمایی



Link: https://www.skyroom.online/ch/ipm-particles/journal-club

سخنران: A. De Rujula, IFT, UAM/CSIC, Madrid & Theory Division of CERN

4 تیر 1404
18:00 تا 19:30

Date and time,


6-7:30pm, Wednesday 25 June 2025 (4 Tir 1404)


Venue: Online

Link:https://www.skyroom.online/ch/schoolofphysics/colloquium

Abstract:
Gamma Ray Bursts (GRBs) and Cosmic Rays (CRs) are easily understandable. Solid observations of quasars and micro-quasars show how these objets emit “Cannonballs” (CBs), though the underlying mechanisms are not theoretically well understood. The assumption that core-collapse supernovae emit CBs plus some trivial relativistic kinematics provide a successful understanding of GRBs and CRs. The self-defined “official experts” on these fields resist the evidence, in an explicitly inquisitorial way.



Link: https://www.skyroom.online/ch/schoolofphysics/colloquium

سخنران: ابوتراب یغمایی؛ دانشگاه شهید بهشتی

26 خرداد 1404
16:00 تا 18:00

رویکرد درونی به تعبیر نظریه های فیزیکی و ملاحظاتی دربارۀ آن

Link: https://philosophy.ipm.ac.ir/

سخنران: المیرا قاسمی

25 خرداد 1404
16:00 تا 17:30



Link: https://ipm.ac.ir/images/news/PH2500118.jpg

سخنران: زانیار قادرنژاد, دانشگاه بوکینگهام انگلیس

22 خرداد 1404
14:00 تا 16:00


Venue: Niavaran, Khosrovshahi Lecture Hall

سخنران: دکتر سعید حدادی - پژوهشگاه دانش های بنیادی، پژوهشکده ذرات و شتابگرها

21 خرداد 1404
11:00 تا 12:00

ویژگی‌های کوانتومی گربه‌های گرانشی

Link: https://www.skyroom.online/ch/ipm-particles/weekly-seminar

سخنران: سید حسین اسدپور

21 خرداد 1404
14:00 تا 15:00

چکیده:

In this presentation, we will study the spatially dependent of the coherent optical phenomena in quantum systems. Here, we will discuss the electromagnetically induced grating via optical composite vortex light in a four-level N-type atomic system. We will show that by controlling the orbital angular momentum of the optical vortex light the diffraction pattern of the Fraunhofer diffraction can be controlled in different regions of the space. Moreover, we will study the spontaneous emission (SE) spectrum of the quantum system in two different quantum systems via optical vortex light. In the first one, we will discuss the spatial pattern of the spontaneous emission spectrum in a four-level atomic system located in free space and in the second one, we will analyze the SE spectrum of a double V-type atomic system located near plasmonic nanostructure.


لینک حضور آنلاین در سمینار


https://vmeeting2.ipm.ir/b/nan-gkn-wmh-exh

Link: http://qpm.ipm.ac.ir/