Quantum and thermal effects of dark solitons in a one-dimensional bose gas

Martin, A.D. and Ruostekoski, J. (2010) Quantum and thermal effects of dark solitons in a one-dimensional bose gas. Physical review letters, 104 (19). ISSN 1079-7114

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Abstract

We numerically study the imprinting and dynamics of dark solitons in a bosonic atomic gas in a tightly confined one-dimensional harmonic trap both with and without an optical lattice. Quantum and thermal fluctuations are synthesized within the truncated Wigner approximation in the quasicondensate description. We track the soliton coordinates and calculate position and velocity uncertainties. We find that the phase fluctuations lower the classically predicted soliton speed and seed instabilities. Individual runs show interactions of solitons with sound waves, splitting, and disappearing solitons.

Item Type:
Journal Article
Journal or Publication Title:
Physical review letters
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/3100
Subjects:
ID Code:
123669
Deposited By:
Deposited On:
26 Feb 2018 12:08
Refereed?:
Yes
Published?:
Published
Last Modified:
11 Feb 2020 09:20