Non-equilibrium dynamics of Bosonic Mott insulators in an electric field

Details Non-equilibrium dynamics of Bosonic Mott insulators in an electric field Non-equilibrium dynamics of Bosonic Mott insulators in an electric field

2011-06-20

arxiv.org/abs/1106.4031v1

Physics

Condensed Matter

Quantum Gases

4+epsilon pages, 3 figures

Scientific paper

We study the non-equilibrium 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 (QCP) 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 excess defect density D, 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 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.

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