Document Type
Article
Publication Date
11-16-2007
Publication Title
Physical Review Letters
Abstract
We study the survival of supercurrents in a system of impenetrable bosons on a lattice, subject to a quantum quench from its critical superfluid phase to an insulating phase. We show that the evolution of the current when the quench follows a Rosen-Zener profile is exactly solvable. This allows us to analyze a quench of arbitrary rate, from a sudden destruction of the superfluid to a slow opening of a gap. The decay and oscillations of the current are analytically derived and studied numerically along with the momentum distribution after the quench. In the case of small supercurrent boosts ν, we find that the current surviving at long times is proportional to ν3.
Volume
99
Issue
20
DOI
10.1103/PhysRevLett.99.205303
ISSN
00319007
Rights
© 2007 The American Physical Society
Recommended Citation
Klich, I.; Lannert, Courtney; and Refael, G., "Supercurrent Survival under a Rosen-Zener Quench of Hard-Core Bosons" (2007). Physics: Faculty Publications, Smith College, Northampton, MA.
https://scholarworks.smith.edu/phy_facpubs/67
Comments
Archived as published.