Thursday, April 19, 2012

1204.4081 (Tsubasa Ichikawa et al.)

Equation of State for One-Dimensional Attractive δ-Bose Gas in Weak
Coupling Regime

Tsubasa Ichikawa, Izumi Tsutsui, Nobuhiro Yonezawa
Approximated formulae for real quasi-momentum and the associated energy spectrum are presented for one-dimensional Bose gas with weak attractive contact interactions. On the basis of the energy spectrum, we obtain the equation of state in the high temperature region, which is found to be the van der Waals equation without volume correction.
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