Thermodynamics of a Bose-Einstein condensate with weak disorder
Thermodynamics of a Bose-Einstein condensate with weak disorder
We consider the thermodynamics of a homogeneous superfluid dilute Bose gas in the presence of weak quenched disorder. Following the zero-temperature approach of Huang and Meng, we diagonalize the Hamiltonian of a dilute Bose gas in an external random $\ensuremath{\delta}$-correlated potential by means of a Bogoliubov transformation. We extend this …