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arXiv:cond-mat/0610409 · Journal of Physics A Mathematical and Theoretical

Low-temperature asymptotics of integrable systems in an external field

Michael Bortz

Published Dec 6, 2006• 53 citations
arXivHTMLPDF

Abstract

An asymptotic low-temperature expansion is performed for an integrable bosonic lattice model and for the critical spin-1/2 Heisenberg chain in a magnetic field. The results apply to the integrable Bose gas as well. We also comment on a high-temperature expansion of the bosonic lattice model.
DOI
10.1088/1751-8113/40/1/001

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