arXiv:2503.21831

Thermodynamics of the XX spin chain in the QTM approach

P. N. Bibikov

Published Mar 26, 2025• 0 citations

Abstract

The free energy density of the XX chain in magnetic field is obtained in two alternative ways within the Quantum Transfer Matrix approach. In both the cases the proofs are complete and self-consistent. All the intermediate constructions are presented explicitly in detail.

DOI: 10.48550/arxiv.2503.21831

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