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[Fizinfo] Szilárd-kollokvium (kedd 14:30), Moessner az időkristályokról

From: Dr. Dóra Balázs <dora.balazs AT ttk.bme.hu>
To: "fizinfo AT lists.kfki.hu" <fizinfo AT lists.kfki.hu>
Subject: [Fizinfo] Szilárd-kollokvium (kedd 14:30), Moessner az időkristályokról
Date: Wed, 10 May 2023 11:11:15 +0000
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MEGHÍVÓ

a Szilárd Leó-Kollokvium előadására:

Roderich Moessner
(MPIPKS Dresden)

"Thermodynamics and order beyond equilibrium — from eigenstate thermalisation
to time crystals"

Kivonat: The field of thermodynamics is one of the crown jewels of classical
physics. Thanks to the advent of experiments in cold atomic systems with long
coherence times, our understanding of the connection of thermodynamics to
quantum statistical mechanics has seen remarkable progress.

Extending these ideas and concepts to the non-equilibrium setting is a
challenging topic, in itself of perennial interest. Here, we present
perhaps the simplest non-equilibrium class of quantum problems, namely
Floquet systems, i.e. systems whose Hamiltonians depend on time
periodically, H(t + T) = H(t). For these, there is no energy conservation,
and hence not even a natural concept of temperature.

We find that certain structures from equilibrium thermodynamics are lost,
while entirely new non-equilibrium phenomena can arise, including a
spectacular spatiotemporal `time-crystalline' form of order, recently
observed experimentally on google AI's sycamore NISQ platform.

Helye: BME Fizikai Intézet, Fizika Tanszék
Budafoki út 8. F-épület, 2. emelet, 13-as terem

Ideje: 2023. május 16. (kedd), 14:30.
Kapunyitás 14:15-től.
Program: http://physics.bme.hu/kollokvium

Minden érdeklődőt szívesen látunk!

Dóra Balázs és Zaránd Gergely

[Fizinfo] Szilárd-kollokvium (kedd 14:30), Moessner az időkristályokról, Dr . Dóra Balázs, 05/10/2023