Analytical results for the Coqblin-Schrieffer model with generalized magnetic fields
V.V. Bazhanov, S.L. Lukyanov, A.M. Tsvelik
TL;DR
This paper derives analytical formulas for the free energy of the Coqblin-Schrieffer model under arbitrary magnetic and crystal fields, providing insights into symmetry crossover phenomena.
Contribution
It introduces an alternative analytical approach to the Thermodynamic Bethe Ansatz for the Coqblin-Schrieffer model with generalized fields.
Findings
Analytical expressions for free energy with arbitrary fields
Description of SU(4) to SU(2) symmetry crossover
Extension beyond traditional Bethe Ansatz methods
Abstract
Using the approach alternative to the traditional Thermodynamic Bethe Ansatz, we derive analytical expressions for the free energy of Coqblin-Schrieffer model with arbitrary magnetic and crystal fields. In Appendix we discuss two concrete examples including the field generated crossover from the SU(4) to the SU(2) symmetry in the SU(4)-symmetric model.
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