Thermodynamics of a two-dimensional interacting Bose gas trapped in a quartic potential

Karabulut E. O., Koyuncu M., ATAV Ü., TOMAK M.

PHYSICS LETTERS A, vol.375, no.3, pp.339-345, 2011 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 375 Issue: 3
  • Publication Date: 2011
  • Doi Number: 10.1016/j.physleta.2010.11.041
  • Journal Name: PHYSICS LETTERS A
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.339-345
  • Middle East Technical University Affiliated: Yes

Abstract

We have studied the Bose-Einstein condensation (BEC) of an interacting Bose gas confined in a two-dimensional (2D) quartic potential by using a mean-field, semiclassical two-fluid model. A thermodynamic analysis including the chemical potential, condensate fraction, total energy, and specific heat has been carried out by considering different values of the interaction strength. Finally, we have found that the behaviour of the condensate fraction and specific heat of quartically trapped bosons differs from those of bosons trapped in a harmonic potential. (C) 2010 Elsevier B.V. All rights reserved.