Nonequilibrium quantum dynamics of partial symmetry breaking for ultracold bosons in an optical lattice ring trap
arXiv:1705.02051
Abstract
A vortex in a Bose-Einstein condensate on a ring undergoes quantum dynamics in response to a quantum quench in terms of partial symmetry breaking from a uniform lattice to a biperiodic one. Neither the current, a macroscopic measure, nor fidelity, a microscopic measure, exhibit critical behavior. Instead, the symmetry memory succeeds in identifying the point at which the system begins to forget its initial symmetry state. We further identify a symmetry energy difference in the low lying excited states which trends with the symmetry memory.
References in corpus (22)
- The density-matrix renormalization group
- Nonequilibrium dynamics of closed interacting quantum systems
- Ultracold atomic gases in optical lattices: mimicking condensed matter physics and beyond
- Observation of many-body localization of interacting fermions in a quasi-random optical lattice
- Quantum many-body systems out of equilibrium
- Characterizing Quantum Supremacy in Near-Term Devices
- Light-cone-like spreading of correlations in a quantum many-body system
- Probing the Superfluid to Mott Insulator Transition at the Single Atom Level
- Non-local propagation of correlations in long-range interacting quantum systems
- Experimental Observation of a Generalized Gibbs Ensemble
- Quench dynamics and non equilibrium phase diagram of the Bose-Hubbard model
- A lattice of double wells for manipulating pairs of cold atoms
- Multi-Component Quantum Gases in Spin-Dependent Hexagonal Lattices
- Experimental realization of Josephson junctions for an Atom SQUID
- Quench-induced supercurrents in an annular Bose gas
- Observation of Phase Defects in Quasi-2D Bose-Einstein Condensates
- Dynamic properties of the one-dimensional Bose-Hubbard model
- Electronic structure of heavily-doped graphene: the role of foreign atom states
- Dynamical signatures of molecular symmetries in nonequilibrium quantum transport
- The fidelity approach to the Hubbard model
- Fractional-filling loophole insulator domains for ultracold bosons in optical superlattices
- Mesoscopic Effects in Quantum Phases of Ultracold Quantum Gases in Optical Lattices