T_c for dilute Bose gases: beyond leading order in 1/N

Details T_c for dilute Bose gases: beyond leading order in 1/N T_c for dilute Bose gases: beyond leading order in 1/N

2000-05-11

arxiv.org/abs/cond-mat/0005197v2

Phys.Rev.A62:063604,2000

Physics

Condensed Matter

Statistical Mechanics

21 pages, 7+1 figures; an embarassing factor of 2 has been corrected in the evaluation of one diagram, changing the previous +

Scientific paper

10.1103/PhysRevA.62.063604

Baym, Blaizot, and Zinn-Justin have recently used the large N approximation to calculate the effect of interactions on the transition temperature of dilute Bose gases. We extend their calculation to next-to-leading-order in 1/N and find a relatively small correction of -26% to the leading-order result. This suggests that the large N approximation works surprisingly well in this application.

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