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Equation of state for the one-dimensional attractive δ-potential Bose gas in the weak-coupling regime (1204.4081v3)
Published 18 Apr 2012 in cond-mat.quant-gas, math-ph, math.MP, and quant-ph
Abstract: 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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