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TT: Fachverband Tiefe Temperaturen

TT 37: Cold Atomic Gases

TT 37.6: Vortrag

Dienstag, 1. April 2014, 11:15–11:30, HSZ 304

2D Phase Space Crystals: artificial gauge fields in phase space — •Lingzhen Guo^1,2, Michael Marthaler^1,2, and Gerd Schön^1,2 — ¹Institut für Theoretische Festkörperphysik, Karlsruhe Institute of Technology(KIT), Karlsruhe, Germany — ²DFG-Center for Functional Nanostructures (CFN), Karlsruhe Institute of Technology, Karlsruhe, Germany

We propose a new paradigm to study the properties of driven systems. We find the driving field in fact induces a lattice structure in phase space, which we call phase space crystals [1]. The discrete sysmmetry of phase space lattice allows us to apply the Bloch theorem in solid state physics to the study of driven systems. From this point of view, we investigate the gap openning mechanism of quasienergy spectrum different from that in solid state physics. Interestingly, because the two dimensions of phase space are intrinsically noncommutative, there exists an effective magnetic field in phase space. We explore the related physics due to the existence of this artificial magnetic field.
Phys. Rev. Lett. 111, 205303 (2013)