The thermodynamic Bethe ansatz and the 1/<i>N</i> correction to the density phase transition in the Gross-Neveu model期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

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The thermodynamic Bethe ansatz and the 1/N correction to the density phase transition in the Gross-Neveu model

Authors:	Alan Chodos Hisakazu Minakata

Institution:	^a Center for Theoretical Physics, Yale University, 217 Prospect Street, New Haven, CT 06511-8167, USA ^b Department of Physics, Tokyo Metropolitan University, 1-1 Minami-Osawa, Hachioji, Tokyo 192-03, Japan

Abstract:	We compute the 1/N correction to the location of the previously found first-order phase transition in the Gross-Neveu model at a chemical potential where m is the fermion mass. We employ an expression for the free energy f(μ) given by the thermodynamic Bethe ansatz under the approximation that the fundamental fermions dominate the ground state, and combine it with the effective potential evaluated at zero chemical potential. Our result is .

Keywords:	Gross-Neveu model 1/N corrections Polyacetylene
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