Bazhanov, VladimirLukyanov, Sergei LTsvelik, A M2015-12-132015-12-130163-1829http://hdl.handle.net/1885/87810Using 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 the Appendix we calculate the zero-temperature magnetic susceptibility for two concrete crystal-field patterns. One of the patterns describes the field generated crossover from the SU(4) to the SU(2) symmetry in the SU(4)-symmetric model.Keywords: article; crystal; magnetic field; mathematical analysis; mathematical model; temperature dependence; thermodynamics20032015-12-12