Canonical ensemble ground state and correlation entropy of Bose-Einstein condensate Academic Article uri icon


  • 2018 IOP Publishing Ltd and Deutsche Physikalische Gesellschaft. Constraint of a fixed total number of particles yields a correlation between the fluctuation of particles in different states in the canonical ensemble. Here we show that, below the temperature of Bose-Einstein condensation (BEC), the correlation part of the entropy of an ideal Bose gas is cancelled by the ground-state contribution. Thus, in the BEC region, the thermodynamic properties of the gas in the canonical ensemble can be described accurately in a simplified model which excludes the ground state and assumes no correlation between excited levels.

published proceedings


altmetric score

  • 0.75

author list (cited authors)

  • Svidzinsky, A., Kim, M., Agarwal, G., & Scully, M. O.

citation count

  • 5

complete list of authors

  • Svidzinsky, Anatoly||Kim, Moochan||Agarwal, Girish||Scully, Marlan O

publication date

  • January 2018