سخنران: پریسا موسوی؛ دانشگاه یورک

10 اردیبهشت 1403
16:00 تا 18:00

خاص‌گرایی اخلاقی و چشم‌اندازهای اخلاق ماشین

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

سخنران: دکتر حامد عبدالمالکی (پژوهشگاه دانشهای بنیادی و دانشگاه ملایر)

12 اردیبهشت 1403
11:00 تا 12:00

بررسی کوپلینگهای نظریه میدانهای موثر مدل استاندارد در شتابدهنده بزرگ هادرونی



Link: https://meet.google.com/fnv-dfkk-ghb

سخنران: محسن علیشاهیها
(پژوهشگاه دانش های بنیادی)

12 اردیبهشت 1403
13:30 تا 15:00

این سمینار روز چهارشنبه مورخ 12 اردیبهشت ماه 1403 ساعت 13:30 به صورت حضوری در سالن سمینار پژوهشکده نجوم برگزار می شود.

سخنران: شانت شهبازیان

12 اردیبهشت 1403
14:00 تا 15:00

چکیده:

The orthodox many-body theory of atoms, molecules and condensed phases is the electronic structure theory plus the theory of nuclear vibrations and rotations. The basic tent of this theory is the Born-Oppenheimer separation of the electronic and nuclear dynamics through deriving two Schrodinger equations, one for electrons, and the other for nuclei. The electronic Schrodinger equation, which conceives electrons as the sole quantum particles within the external field produced by clamped nuclei, yields the electronic eigenvalues, i.e. the potential energy surfaces, and the electronic eigenfunctions. On the other hand, the nuclear Schrodinger equation, which conceives nuclei as quantum particles experiencing the potential energy surfaces as the effective potentials, yields the eigenvalues and eigenstates of the collective vibrational and rotational modes. An unorthodox but more general reformulation of the many-body theory, called the multi-component quantum chemistry, dismisses the Born-Oppenheimer separation totally and the resulting many-body system is governed by a single multi-component Hamiltonian encompassing all interactions between electrons and nuclei. Theoretically, the resulting multi- component theory contains the orthodox theory as a special case thus one intuitionally expects it must be capable of reproducing the concepts and numerical results derived within the context of the orthodox many-body theory. In contrast, various theoretical arguments and computational studies, particularly in the last two decades, reveal exotic features of the multi-component quantum chemistry theory incompatible with the results derived from the orthodox many-body theory. In this talk I will introduce the basic tents of the multi-component quantum chemistry at a non-technical level as well as some of its paradoxical features by considering some illustrative examples. Some selected applications of the theory are also briefly considered including the status of nuclear quantum-superposed states in molecular systems and the newly discovered positronic bonds.


برای شرکت در این وبینار وارد لینک زیر شده و به صورت میهمان لاگین کنید


https://www.skyroom.online/ch/schoolofnanoscience/weeklyseminars

سخنران: مریم شاه سیاه, اصفهان

12 اردیبهشت 1403
14:00 تا 15:00


Venue: Niavaran, Lecture Hall 1

سخنران: آنکه پُل, دانشگاه برمن آلمان

12 اردیبهشت 1403
15:30 تا 17:00


Venue: , (Online)

سخنران: راضیه احمدیان, دانشگاه شهید بهشتی

12 اردیبهشت 1403
17:30 تا 19:00


Venue: , (Online)

سخنران: Sh. Salimi, University of Kurdistan

26 اردیبهشت 1403
18:00 تا 17:30

Date and time,


6-7:30pm, Wednesday 26 Ordibehesht 1403 (15 May 2024).


Venue: Online



Link

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



Abstract


Quantum mechanics provided precise and accurate explanations for the experiments conducted at the end of the 19th century. This led to the rapid development of quantum mechanics between 1905 and 1923, capturing the scientific community's attention. At the Solvay Conference in 1927, Werner Heisenberg, a leading figure of the Copenhagen interpretation, presented the uncertainty principle within quantum mechanics. In this lecture, we will explore the significance of Heisenberg's uncertainty principle, discuss a fundamental problem in its original formulation, and introduce the entropy uncertainty relation as an alternative. Furthermore, we will investigate into quantum entanglement and quantum discord, highlighting their crucial roles in precisely determining entropy uncertainty relation.

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