A Note on Statistical Interactions and the Thermodynamic Bethe Ansatz

Details A Note on Statistical Interactions and the Thermodynamic Bethe Ansatz A Note on Statistical Interactions and the Thermodynamic Bethe Ansatz

1994-04-12

arxiv.org/abs/cond-mat/9404025v2

Physics

Condensed Matter

Latex file, 9 pages; SPhT-94-043, UU-HEP/94-03}. (Minor changes with references added)

Scientific paper

We show that the thermodynamic Bethe ansatz equations for one-dimensional integrable many-body systems can be reinterpreted in such a way that they only code the statistical interactions, in the sense of Haldane, between particles of identical or different momenta. Thus, the thermodynamic properties of these systems can be characterized by the generalized ideal gases recently proposed by one of us. For example, the Yang-Yang $\delta$-function gas is a gas with specific statistical interactions between particles of different momenta, while the Calogero-Sutherland system provides a model for an ideal gas of particles with a fractional statistics.

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