Article
The condensate number in PIMC treatments of trapped bosons
PHYSICA B
Publication Date
2000
Abstract
In path integral Monte Carlo (PIMC) treatments of harmonically trapped bosons, one cannot use the usual long-range constant limit of the one-body reduced density matrix ρ1 to determine the condensate number n0 because ρ1 always approaches zero in a trap. W. Krauth found that the longest permutation cycle arising in the simulation gives a consistent value of n0. Our analytical studies of the ideal gas suggest other ways of using permutation cycles to determine n0. We test these approaches on simulations involving finite-size ideal and interacting gases and find that the methods are consistent.
Disciplines
Comments
Published version located at http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6TVH-41B6CCX-5&_user=1516330&_coverDate=07%2F31%2F2000&_rdoc=1&_fmt=high&_orig=search&_origin=search&_sort=d&_docanchor=&view=c&_searchStrId=1513271301&_rerunOrigin=google&_acct=C000053443&_version=1&_urlVersion=0&_userid=1516330&md5=944e8d90d71780b5d1e34c68e9fe75eb&searchtype=a
Pages
9-10
Citation Information
WJ Mullin, SD Heinrichs and JP Fernandez. "The condensate number in PIMC treatments of trapped bosons" PHYSICA B Vol. 284 (2000) Available at: http://works.bepress.com/william_mullin/35/