Bose-Einstein Condensation of Hard Sphere Homogeneous Gas in Static Fluctuation Approximation

Abstract

The condensation fraction, transition temperature, and energy per particle for a hard sphere interacting homogeneous Bose gas using the static fluctuation approximation have been determined. The transition temperature at liquid helium density has been found to be lower than that for the noninteracting gas. Both superfluidity and the Bose-Einstein condensation have been found to occur at the same transition temperature. Our results are consistent with results obtained by other methods.

On the Effects of the Interaction Potential Parameters on Bose-Einstein Condensation

“…In a previous work, a simple step potential model is used to investigate the role of the repulsive interaction on such systems [7]. This work is a continuation for that with more realistic potential consisting of repulsive and attractive potential.…”