Josephson oscillations in split one-dimensional Bose gases

• URL: http://arxiv.org/abs/2010.11214v1
• Date: Wed, 21 Oct 2020 18:01:06 GMT
• Title: Josephson oscillations in split one-dimensional Bose gases
• Authors: Yuri D. van Nieuwkerk, J\"org Schmiedmayer and Fabian H.L. Essler
• Abstract summary: We consider the non-equilibrium dynamics of a weakly interacting Bose gas tightly confined to a highly elongated double well potential. We model the time-dependent splitting and phase imprinting of a gas initially confined to a single quasi one-dimensional potential well and obtain a microscopic description of the ensuing damped Josephson oscillations.
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• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: We consider the non-equilibrium dynamics of a weakly interacting Bose gas tightly confined to a highly elongated double well potential. We use a self-consistent time-dependent Hartree--Fock approximation in combination with a projection of the full three-dimensional theory to several coupled one-dimensional channels. This allows us to model the time-dependent splitting and phase imprinting of a gas initially confined to a single quasi one-dimensional potential well and obtain a microscopic description of the ensuing damped Josephson oscillations.

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