Dresden 2020 – scientific programme
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DY: Fachverband Dynamik und Statistische Physik
DY 53: Poster: Quantum Dynamics, Chaos and Information; Many Body Systems
DY 53.14: Poster
Thursday, March 19, 2020, 15:00–18:00, P1A
Entanglement in integrable-chaotic bipartite systems — •Maximilian Kieler1 and Arnd Bäcker1,2 — 1TU Dresden, Institut für Theoretische Physik — 2MPI für Physik komplexer Systeme, Dresden
We investigate entanglement of eigenstates and time-evolved states for the four-dimensional coupled quantum standard map where one subsystem is integrable and the other is chaotic. An analytic description of the eigenstate transition from unentangled to entangled is governed by a single transition parameter. The time evolution is investigated with respect to the initial state ensembles of unperturbed eigenstates, random states, and coherent states. Each ensemble exhibits different initial time behaviour and asymptotic values of the entropy.