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TT: Fachverband Tiefe Temperaturen

TT 9: Quantum Liquids, Miscellaneous 1

TT 9.11: Talk

Monday, March 11, 2013, 12:15–12:30, H21

Dynamical phase transitions and the connections to the nonequilibrium dynamics of local observables — •Markus Heyl¹, Anatoli Polkovnikov², and Stefan Kehrein³ — ¹Technische Universität Dresden — ²Boston University — ³Georg-August-Universität Göttingen

We study general connections between the recently introduced dynamical phase transitions [1] and the dynamics of local observables after a quantum quench. In particular, we show that qualitative changes in the relaxational behavior of equilibrium order parameters occur through dynamical transitions between topologically different ground states. We demonstrate our findings for quantum quenches in the one-dimensional transverse field Ising chain.
[1] M. Heyl, A. Polkovnikov, and S. Kehrein, arXiv:1206.2505