A grand-canonical approach to the disordered Bose gas

作者:Gaul Christopher*; Mueller Cord A
来源:Applied Physics B: Lasers and Optics , 2014, 117(3): 775-784.
DOI:10.1007/s00340-014-5805-2

摘要

We study the problem of disordered interacting bosons within grand-canonical thermodynamics and Bogoliubov theory. We compute the fractions of condensed and non-condensed particles and corrections to the compressibility and the speed of sound due to interaction and disorder. There are two small parameters, the disorder strength compared to the chemical potential and the dilute-gas parameter.

  • 出版日期2014-12