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Limits of validity for a semiclassical mean-field two-fluid model for Bose–Einstein condensation thermodynamics

Author

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  • Adhikari, Sadhan K
  • Gammal, A

Abstract

We reinvestigate the Bose–Einstein condensation (BEC) thermodynamics of a weakly interacting dilute Bose gas under the action of a trap using a semi-classical two-fluid mean-field model in order to find the domain of applicability of the model. Such a model is expected to break down once the condition of diluteness and weak interaction is violated. We find that this breakdown happens for values of coupling and density near the present experimental scenario of BEC. With the increase of the interaction coupling and density the model may lead to unphysical results for thermodynamic observables.

Suggested Citation

  • Adhikari, Sadhan K & Gammal, A, 2000. "Limits of validity for a semiclassical mean-field two-fluid model for Bose–Einstein condensation thermodynamics," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 286(1), pages 299-306.
    • Handle: RePEc:eee:phsmap:v:286:y:2000:i:1:p:299-306
    DOI: 10.1016/S0378-4371(00)00347-2
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    Cited by:

    1. Bazgan, Sergiu & Pezze, Luca & Smerzi, Augusto & Enaki, Nicolae A., 2018. "Description of Bose–Einstein condensate of cold gas in interaction through virtual states of non-condensate atomic components," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 503(C), pages 190-199.

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