Dissipative two-mode Bose–Einstein condensate coupled to the environment

Kalai Kumar Rajagopal

Physica A: Statistical Mechanics and its Applications, 2015, vol. 429, issue C, 231-241

Abstract: We study the dynamics of an atomic condensate loaded in two symmetric traps where one of the trap is coupled to a reservoir. Analytical solution of the population dynamics is given for the non-interacting two-mode Bose–Einstein condensate system in the Markovian limit. In our model dissipation is induced by the reservoir fluctuation in agreement with the Fluctuation–Dissipation theorem. For the interacting two-mode case however, we resort to numerical calculation to study the effect of damping on the population evolution. We have shown that dissipation acting concurrently with repulsion interaction drives the BEC self trapping state back to the quantum tunnelling state for the zero-temperature case. For the finite temperature case however much surprising dynamics were observed as the tunnelling between the traps is suppressed when the temperature of the system is increased.

Keywords: Two-mode BEC; Markovian; Dissipation (search for similar items in EconPapers)
Date: 2015
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:429:y:2015:i:c:p:231-241

DOI: 10.1016/j.physa.2015.02.059

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