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Nonequilibrium quantum dynamics of atomic dark solitons

Nonequilibrium quantum dynamics of atomic dark solitons
Nonequilibrium quantum dynamics of atomic dark solitons
We study quantum dynamics of bosonic atoms that are excited to form a phase kink, or several kinks, by an imprinting potential in a one-dimensional trap. We calculate dissipation due to quantum and thermal fluctuations in soliton trajectories, collisions and the core structure. Single-shot runs show weak filling of a soliton core, typically deeper solitons in the case of stronger fluctuations and spreading/disappearing solitons due to collisions. We also analyze a soliton system in an optical lattice that shows especially strong fluctuation-induced phenomena.
Martin, A.D.
642fdaf4-ea13-4e82-9ef1-a4bd5a507364
Ruostekoski, J.
2beb155e-64b0-4ee9-9cfe-079947a9c9f4
Martin, A.D.
642fdaf4-ea13-4e82-9ef1-a4bd5a507364
Ruostekoski, J.
2beb155e-64b0-4ee9-9cfe-079947a9c9f4

Martin, A.D. and Ruostekoski, J. (2010) Nonequilibrium quantum dynamics of atomic dark solitons. New Journal of Physics, 12 (055018-[20pp]). (doi:10.1088/1367-2630/12/5/055018).

Record type: Article

Abstract

We study quantum dynamics of bosonic atoms that are excited to form a phase kink, or several kinks, by an imprinting potential in a one-dimensional trap. We calculate dissipation due to quantum and thermal fluctuations in soliton trajectories, collisions and the core structure. Single-shot runs show weak filling of a soliton core, typically deeper solitons in the case of stronger fluctuations and spreading/disappearing solitons due to collisions. We also analyze a soliton system in an optical lattice that shows especially strong fluctuation-induced phenomena.

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Published date: May 2010

Identifiers

Local EPrints ID: 145353
URI: http://eprints.soton.ac.uk/id/eprint/145353
PURE UUID: 46e0acdc-dfc1-46b6-aa1a-11f15492df15

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Date deposited: 19 Apr 2010 08:23
Last modified: 08 Nov 2021 18:12

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Contributors

Author: A.D. Martin
Author: J. Ruostekoski

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