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[Fizinfo] Reminder: Ortvay kollokvium/Ortvay colloquium today: Exactly solved models of many-body quantum chaos

From: Kormányos Andor <andor.kormanyos AT ttk.elte.hu>
To: "fizinfo AT lists.kfki.hu" <fizinfo AT lists.kfki.hu>, "ttk-fiz-faculty AT listbox.elte.hu" <ttk-fiz-faculty AT listbox.elte.hu>, "ttk-fiz-kutato AT listbox.elte.hu" <ttk-fiz-kutato AT listbox.elte.hu>, "ttk-fiz-emeritus AT listbox.elte.hu" <ttk-fiz-emeritus AT listbox.elte.hu>, "ttk-fiz-postdoc AT listbox.elte.hu" <ttk-fiz-postdoc AT listbox.elte.hu>, "ttk-fiz-phd-hallgatok AT listbox.elte.hu" <ttk-fiz-phd-hallgatok AT listbox.elte.hu>, "ttk-fiz-alkalmazottak AT listbox.elte.hu" <ttk-fiz-alkalmazottak AT listbox.elte.hu>
Subject: [Fizinfo] Reminder: Ortvay kollokvium/Ortvay colloquium today: Exactly solved models of many-body quantum chaos
Date: Thu, 20 Oct 2022 08:54:33 +0000
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ELTE TTK Fizikai Intézet / ELTE Institute of Physics

ORTVAY KOLLOKVIUM / ORTVAY COLLOQUIUM

(https://physics.elte.hu/ortvayseminar)

Thursday, 20th October 2022, 15:00h.

Pócza Jenő Classroom, Physics Building 1.71

Pázmány Péter sétány 1/A, 1117 Budapest.

Tomaz Prosen

University of Ljubljana, Slovenia

Exactly solved models of many-body quantum chaos

I will discuss the problem of unreasonable effectiveness of random matrix
theory for description of spectral fluctuations in extended quantum lattice
systems. A class of locally interacting spin systems has been recently
identified where the spectral form factor is proven to match with gaussian or
circular ensembles of random matrix theory, and where spatiotemporal
correlation functions of local observables as well as some measures of
dynamical complexity can be calculated analytically. These, so-called dual
unitary systems, include integrable, non-ergodic, ergodic, and generically,
(maximally) chaotic cases. After reviewing the basic properties of dual
unitary Floquet circuits, I will argue that correlation functions of these
models are generally perturbatively stable with respect to breaking
dual-unitarity, and describe a simple result within this framework.

The seminar can also be followed via Microsoft Teams:

https://teams.microsoft.com/l/meetup-join/19%3aae82b8ac8d2c47038013d32a7e7baf8a%40thread.tacv2/1665907031693?context=%7b%22Tid%22%3a%22b366dbcd-4fc3-4451-82d2-e239564302c3%22%2c%22Oid%22%3a%22560bcc66-85b7-4700-9055-41903a3659ca%22%7d

Best regards,
Andor Kormányos
coordinator

[Fizinfo] Reminder: Ortvay kollokvium/Ortvay colloquium today: Exactly solved models of many-body quantum chaos, Kormányos Andor, 10/20/2022