Physics – Condensed Matter – Statistical Mechanics
Scientific paper
2002-12-13
J. Math. Phys. 42 4883 (2001)
Physics
Condensed Matter
Statistical Mechanics
15 pages
Scientific paper
10.1063/1.1396836
One-dimensional repulsive delta-function bose system is studied. By only using the Bethe ansatz equation, n-particle partition functions are exactly calculated. From this expression for the n-particle partition function, the n-particle cluster integral is derived. The results completely agree with those of the thermal Bethe ansatz (TBA). This directly proves the validity of the TBA. The theory of partitions and graphs is used to simplify the discussion.
Kato Go
Wadati Miki
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