Out-of-equilibrium states and quasi-many-body localization in polar lattice gases

Year: 2015

Authors: Barbiero L., Menotti C., Recati A., Santos L.

Autors Affiliation: Univ Padua, Dipartimento Fis & Astron Galileo Galilei, I-35131 Padua, Italy; Univ Trento, INO CNR BEC Ctr, I-38123 Povo, Italy;‎ Univ Trento, Dipartimento Fis, I-38123 Povo, Italy; Tech Univ Munich, D-85748 Garching, Germany; Leibniz Univ Hannover, Inst Theoret Phys, DE-30167 Hannover, Germany

Abstract: The absence of energy dissipation leads to an intriguing out-of-equilibrium dynamics for ultracold polar gases in optical lattices, characterized by the formation of dynamically bound on-site and inter-site clusters of two or more particles, and by an effective blockade repulsion. These effects combined with the controlled preparation of initial states available in cold-gas experiments can be employed to create interesting out-of-equilibrium states. These include quasiequilibrated effectively repulsive 1D gases for attractive dipolar interactions and dynamically bound crystals. Furthermore, nonequilibrium polar lattice gases can offer a promising scenario for the study of quasi-many-body localization in the absence of quenched disorder. This fascinating out-of-equilibrium dynamics for ultracold polar gases in optical lattices may be accessible in on-going experiments.

Journal/Review: PHYSICAL REVIEW B

Volume: 92 (18)      Pages from: 180406-1  to: 180406-5

KeyWords: ULTRACOLD GASES; OPTICAL LATTICE; QUANTUM-SYSTEMS; MOLECULES; DYNAMICS
DOI: 10.1103/PhysRevB.92.180406

Citations: 21
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