BPCPPDYSOE21 – wissenschaftliches Programm
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DY: Fachverband Dynamik und Statistische Physik
DY 25: Nonlinear Dynamics 2 - organized by Azam Gholami (Göttingen)
DY 25.3: Vortrag
Dienstag, 23. März 2021, 11:40–12:00, DYc
Localization in the Kicked Ising Chain from a Dual Perspective — •Daniel Waltner1, Petr Braun1, Maram Akila2, Boris Gutkin3, and Thomas Guhr1 — 1Fakultät für Physik, Universität Duisburg-Essen, 47048 Duisburg, Germany — 2Fraunhofer IAIS, Schloss Birlinghoven, 53757 Sankt Augustin, Germany — 3Department of Applied Mathematics, Holon Institute of Technology, 58102 Holon, Israel
Determining the border between ergodic and localized behavior is of central interest for interacting many-body systems. We consider here the recently very popular spin-chain model that is periodically excited. A convenient description of such a many-body system is achieved by the dual operator that evolves the system in contrast to the time-evolution operator not in time but in particle direction. We identify by various methods the largest eigenvalue of the dual operator as a convenient tool to identify if the system shows ergodic or many-body localized features.