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Dresden 2020 – wissenschaftliches Programm

Die DPG-Frühjahrstagung in Dresden musste abgesagt werden! Lesen Sie mehr ...

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TT: Fachverband Tiefe Temperaturen

TT 9: Many-body Systems: Equilibration, Chaos and Localization I (joint session DY/TT)

TT 9.11: Vortrag

Montag, 16. März 2020, 12:45–13:00, HÜL 186

Signatures of excited-state quantum phase transitions in quench dynamics — •Michal Kloc — Department of Physics, University of Basel, Klingelbergstrasse 82, CH-4056 Basel, Switzerland

Excited-state quantum phase transitions manifest themselves as singularities in the level density of the excited states. In the case of integrable or weakly chaotic systems, we show that equilibration after a rapid quantum quench is affected by these singularities. The specific features of the equilibration process are analyzed using both purely quantum and quasiclassical approaches.

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