Berlin 2015 – wissenschaftliches Programm

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TT: Fachverband Tiefe Temperaturen

TT 29: Focus Session: Dynamics in Many-Body Systems: Equilibration and Localization (joint session TT/DY)

TT 29.1: Hauptvortrag

Dienstag, 17. März 2015, 09:30–10:00, H 0104

Probing Non-Equilibrium Dynamics with Ultracold Atoms: from Quantum Magnetism to Many-Body Localization — •Immanuel Bloch — Fakultät für Physik, Ludwig Maximilians Universität, München, Germany — Max-Planck Institut für Quantenoptik, Garching b. München, Germany

Ultracold quantum gases are an ideal testbed to study non-equilibrium dynamics of closed quantum systems. Their isolation from the environment for example enables one to probe the dynamical evolution of high-energy states in strongly interacting quantum many-body system. In many of these cases, this can result in a breakdown of fundamental assumptions of statistical mechanics, leading to novel many-body paradigms such as, e.g., many-body localization. In my talk I will give several examples from recent experiments in our group where we have studied the quantum dynamics of spin-spirals in a Heisenberg ferromagnet, novel ordering phenomena in long-range interacting quantum magnets realized via Rydberg atoms and the observation of many-body localization in interacting fermionic quantum gases in disordered lattice potentials.