%0 Journal Article
%T Nonequilibrium quantum dynamics of partial symmetry breaking for ultracold bosons in an optical lattice ring trap
%A Zhao, X.
%A McLain, M. A.
%A Vijande, J.
%A Ferrando, A.
%A Carr, L. D.
%A Garcia-March, M. A.
%J New Journal of Physics
%D 2019
%V 21
%I Iop Publishing Ltd
%@ 1367-2630
%G English
%F Zhao_etal2019
%O WOS:000465987600002
%O exported from refbase (https://references.ific.uv.es/refbase/show.php?record=3995), last updated on Mon, 13 May 2019 09:09:48 +0000
%X 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.
%K partial symmetry breaking
%K ultracold boson
%K ring trap
%K nonequilibrium quantum dynamics
%R 10.1088/1367-2630/ab0cb0
%U https://arxiv.org/abs/1705.02051
%U https://doi.org/10.1088/1367-2630/ab0cb0
%P 043042-13pp