TY  - JOUR
AU  - Zhao, X.
AU  - McLain, M. A.
AU  - Vijande, J.
AU  - Ferrando, A.
AU  - Carr, L. D.
AU  - Garcia-March, M. A.
PY  - 2019
DA  - 2019//
TI  - Nonequilibrium quantum dynamics of partial symmetry breaking for ultracold bosons in an optical lattice ring trap
T2  - New J. Phys.
JO  - New Journal of Physics
SP  - 043042
EP  - 13pp
VL  - 21
PB  - Iop Publishing Ltd
KW  - partial symmetry breaking
KW  - ultracold boson
KW  - ring trap
KW  - nonequilibrium quantum dynamics
AB  - 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 critical symmetry breaking 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.
SN  - 1367-2630
UR  - https://arxiv.org/abs/1705.02051
UR  - https://doi.org/10.1088/1367-2630/ab0cb0
DO  - 10.1088/1367-2630/ab0cb0
LA  - English
N1  - WOS:000465987600002
ID  - Zhao_etal2019
ER  -