Superfluidity of mesoscopic Bose gases under varying confinements

Kwangsik Nho, D. Blume

Research output: Contribution to journalArticle

14 Scopus citations

Abstract

The superfluid fraction Ns/N of 27 bosons under varying confinement is investigated at finite temperature using well-known properties of the harmonic oscillator and the microscopic path integral Monte Carlo method. We find that Ns/N (i) is essentially independent of the interaction strength for all temperatures considered, (ii) changes profoundly as the effective dimensionality is varied from three to one dimensional, (iii) is approximately equal to the condensate fraction N0/N for spherical Bose gases, and (iv) deviates dramatically from N0/N for highly elongated Bose gases.

Original languageEnglish (US)
Article number193601
JournalPhysical Review Letters
Volume95
Issue number19
DOIs
StatePublished - Nov 4 2005
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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