Nguyen Van Thu, Luong Thi Theu

Main Article Content


The finite size effect causes many interesting behaviors in properties of a weakly interacting Bose gas. These behaviors were considered in one-loop approximation of quantum field theory. In this paper the influence is investigated in improved Hatree-Fock approximation, which gives more accurate results.

Keywords: finite size effect, improved Hatree-Fock approximation, Bose-Einstein condensate.