SKM 2023 – wissenschaftliches Programm

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TT: Fachverband Tiefe Temperaturen

TT 43: Poster: Correlated Electrons II

TT 43.25: Poster

Mittwoch, 29. März 2023, 15:00–18:00, P2/OG3

Impact of decoherence on the route to equilibrium — •Jiaozi Wang and Jochen Gemmer — University of Osnabrück, Osnabrück, Germany

We study the time evolution of a small quantum system when coupling to a quantum chaotic bath, within the framework of projection operator techniques. We study this problem by employing a different approach which also take the so called pure-dephasing term as a part of the unperturbed Hamiltonian. With this method, a new formula of the relaxation rate is derived analytically in a random matrix model, which is also confirmed by numerical results. We find that, the relaxation process is slowed down by decoherence, which is in consistent with the quantum zeno effect.