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TT: Fachverband Tiefe Temperaturen
TT 67: Cold Atomic Gases and Superfluids
TT 67.5: Vortrag
Donnerstag, 19. März 2020, 17:30–17:45, HSZ 204
Finite-temperature effects and quench dynamics in interacting bosonic flux-ladders — •Maximilian Buser1, Fabian Heidrich-Meisner2, and Ulrich Schollwöck1 — 1Department of Physics, Arnold Sommerfeld Center for Theoretical Physics (ASC), Munich Center for Quantum Science and Technology (MCQST), Fakultät für Physik, Ludwig-Maximilians-Universität München, 80333 München, Germany — 2Institute for Theoretical Physics, Georg-August-Universität Göttingen, 37077 Göttingen, Germany
Flux-ladders constitute the minimal setup enabling a systematic understanding of the rich physics of interacting particles in strong magnetic fields and in lattices. These systems were also realized in a series of experiments and therefore, they have attracted great interest. We study ground-state phases, quench dynamics, and the effect of finite temperatures in interacting bosonic flux-ladders using matrix-product-state techniques. The focus is on experimentally accessible observables such as the chiral current and the leg-population imbalance; typical particle-current patterns and momentum-distribution functions are exemplified. We demonstrate that quantum quenches from suitably chosen initial states can be used to probe the equilibrium properties in the transient dynamics.