Nonequilibrium dynamics of bosonic mott insulators in an electric field

Kolodrubetz, M. ; Pekker, D. ; Clark, B. ; Sengupta, K. (2012) Nonequilibrium dynamics of bosonic mott insulators in an electric field Physical Review B: Condensed Matter and Materials Physics, 85 (10). 100505_1-100505_5. ISSN 1098-0121

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Official URL: http://prb.aps.org/abstract/PRB/v85/i10/e100505

Related URL: http://dx.doi.org/10.1103/PhysRevB.85.100505

Abstract

We study the nonequilibrium dynamics of one-dimensional Mott-insulating bosons in the presence of a tunable effective electric field E which takes the system across a quantum critical point separating a disordered and a translation symmetry broken ordered phase. We provide an exact numerical computation of the residual energy Q, the log fidelity F, the defect density D/L, and the order parameter correlation function for a linear-in-time variation of E with a rate v. We discuss the temporal and spatial variation of these quantities for a range of v and for finite system sizes as relevant to realistic experimental setups [ J. Simon et al. Nature (London) 472 307 (2011)]. We show that in finite-sized systems Q, F, and D obey Kibble-Zurek scaling, and suggest further experiments within this setup to test our theory.

Item Type:Article
Source:Copyright of this article belongs to American Physical Society.
ID Code:94374
Deposited On:15 Nov 2012 04:47
Last Modified:15 Nov 2012 04:47

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