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Dimensional and Temperature Crossover in Trapped Bose Gases

Lookup NU author(s): Professor Nikolaos ProukakisORCiD

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Abstract

We investigate the long-range phase coherence of homogeneous and trapped Bose gases as a function of the geometry of the trap, the temperature, and the mean-field interactions in the weakly interacting limit. We explicitly take into account the (quasi)condensate depletion due to quantum and thermal fluctuations, i.e., we include the effects of both phase and density fluctuations. In particular, we determine the phase diagram of the gas by calculating the off-diagonal one-particle density matrix and discuss the various crossovers that occur in this phase diagram and the feasibility of their experimental observation in trapped Bose gases.

Publication metadata

Author(s): Khawaja UAl, Proukakis NP, Andersen JO, Romans MWJ, Stoof HTC

Publication type: Article

Publication status: Published

Journal: Physical Review A: Atomic, Molecular and Optical Physics

Year: 2003

Volume: 68

Issue: 4

ISSN (print): 1050-2947

ISSN (electronic): 1094-1622

Publisher: American Physical Society

URL: http://dx.doi.org/10.1103/PhysRevA.68.043603

DOI: 10.1103/PhysRevA.68.043603

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