Five-Loop Critical Temperature Shift in Weakly Interacting Homogeneous Bose-Einstein Condensate

Details Five-Loop Critical Temperature Shift in Weakly Interacting Homogeneous Bose-Einstein Condensate Five-Loop Critical Temperature Shift in Weakly Interacting Homogeneous Bose-Einstein Condensate

2002-10-08

arxiv.org/abs/cond-mat/0210162v3

Physics

Condensed Matter

Author Information under http://www.physik.fu-berlin.de/~kleinert/institution.html . Latest update of paper (including all P

Scientific paper

10.1142/S0217984903006074

Using variational perturbation theory, we calculate the shift in the critical
temperature T_c up to five loops to lowest order in the scattering length a and
find Delta T_c/T_c^{(0)} approx (1.14\pm0.11)an^{1/3}, where n is the particle
density. Our result is lower than the latest Monte Carlo result
(1.32\pm0.02)an^{1/3}.

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