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Dresden 2020 – wissenschaftliches Programm

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DY: Fachverband Dynamik und Statistische Physik

DY 5: Many-body Systems: Equilibration, Chaos and Localization I (joint session DY/TT)

DY 5.2: Vortrag

Montag, 16. März 2020, 10:30–10:45, HÜL 186

Evaporative cooling and self-thermalization in an open system of interacting fermions — •Andrey Kolovsky1,2 and Dima Shepelyansky31Kirensky Institute of Physics, 660036 Krasnoyarsk, Russia — 2Siberian Federal University, 660041 Krasnoyarsk, Russia — 3Université de Toulouse, CNRS, 31062 Toulouse, France

We study depletion dynamics of an open system of weakly interacting fermions with two-body random interactions. In this model fermions are escaping from the high-energy one-particle orbitals, that mimics the evaporation process used in laboratory experiments with neutral atoms to cool them to ultra-low temperatures. It is shown that due to self-thermalization the system instantaneously adjusts to the new chemical potential and temperature which decreases in course of time.

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