Berlin 2018 – wissenschaftliches Programm
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TT: Fachverband Tiefe Temperaturen
TT 62: Nonequilibrium Quantum Many-Body Systems II (joint session TT/DY)
TT 62.3: Vortrag
Mittwoch, 14. März 2018, 15:45–16:00, H 3010
Universal prethermal states in slowly driven many-body systems — •Tobias Gulden1, Netanel Lindner1, Erez Berg2, and Mark Rudner3 — 1Technion - Israel Institute of Technology — 2University of Chicago — 3University of Copenhagen
A key challenge in the search for new non-equilibrium phases of matter is the tendency of closed many-body systems to indefinitely absorb energy from a driving field. Generically this leads to an infinite temperature state where any interesting quantum, and in particular topological, effects are washed out. Here we show that in fact heating can be used as a resource for establishing universal prethermal behavior which exhibits topological phenomena. The prethermalization regime which we consider occurs for low driving frequencies, and persists throughout a long time window. Recently such prethermal states were found in one dimensional topological pumps [Lindner, Berg, Rudner, PRX 2017]. We provide bounds on the lifetimes of states, study different manifestations of universal prethermal behavior in a variety of systems, and discuss probes for observing topological properties.