Critical temperature shift in weakly interacting Bose gas - art. no. 120402

Authors
Kashurnikov, VA Prokof'ev, NV Svistunov, BV
Citation
Va. Kashurnikov et al., Critical temperature shift in weakly interacting Bose gas - art. no. 120402, PHYS REV L, 8712(12), 2001, pp. 0402
Citations number
18
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW LETTERS
ISSN journal
00319007 → ACNP
Volume
8712
Issue
12
Year of publication
2001
Database
ISI
SICI code
0031-9007(20010917)8712:12<0402:CTSIWI>2.0.ZU;2-N
Abstract
With a high-performance Monte Carlo algorithm we study the interaction-indu ced shift of the critical point in weakly interacting three-dimensional \ps i\(4) theory (which includes quantum Bose gas). In terms of critical densit y, n(c), mass, m, interaction, U, and temperature, T, this shift is univers al: Deltan(c)(T) = -(CmTU)-T-3-U-2, the constant C found to be equal to 0.0 140 +/- 0.0005. For quantum Bose gas with the scattering length a this impl ies DeltaT(c)/T-c = C(o)an(1/3), with C-o = 129 +/- 0.05.