Attractive Boson and the Gas-Liquid Condensation

Abstract

We calculate a grand partition function of the attractive Bose gas in the infinite space within some approximations. Using the idea of the Yang-Lee zeros, it is proved that the gas-liquid condensation occurs before the conventional condition of the Bose-Einstein condensation is satisfied. Further, it is pointed out that Bosons with a zero momentum play a role of a trigger to this gas-liquid condensation. We discuss its implication to the trapped atomic gas.

12 pages, 2 Postscript figures

References in corpus (1)

• Stable 85Rb Bose-Einstein Condensates with Widely Tunable Interactions

Cited by in corpus (4)

• Hall effect in heavy-fermion metals
• Meissner effect in a charged Bose gas with short-range repulsion
• Bose-Einstein condensation and density collapse in a weakly coupled boson-fermion mixture
• Quantum gas-liquid condensation in an attractive Bose gas