Attractive Boson and the Gas-Liquid Condensation

Details Attractive Boson and the Gas-Liquid Condensation Attractive Boson and the Gas-Liquid Condensation

2000-09-29

arxiv.org/abs/cond-mat/0009471v1

Physical Review B,64,134529(2001)

Physics

Condensed Matter

12 pages, 2 Postscript figures

Scientific paper

10.1103/PhysRevB.64.134529

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.

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