Zero-Temperature Phases of Many-Atom Bose Systems

Bo Gao
Phys. Rev. Lett. 95, 240403 – Published 8 December 2005

Abstract

We show that a many-atom Bose system at zero temperature has, in general, a liquid phase in addition to its well-known gaseous phase. A universal phase diagram is presented that is applicable to all Bose systems with a C6/r6 type of interaction at large interparticle separations. We show that the predicted phase structure has implications on the stability of a gaseous Bose-Einstein condensate (BEC) even at dilute densities that are routinely achieved under existing experimental conditions. We also predict that He4 should have a gaseous BEC phase below a critical density of 5.58×10151/cm3.

  • Figure
  • Figure
  • Received 16 August 2005

DOI:https://doi.org/10.1103/PhysRevLett.95.240403

©2005 American Physical Society

Authors & Affiliations

Bo Gao

  • Department of Physics and Astronomy, University of Toledo, Toledo, Ohio 43606, USA

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Issue

Vol. 95, Iss. 24 — 9 December 2005

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