Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Crystal fields and Kondo effect: new results for the magnetic
  susceptibility   The thermodynamic Bethe ansatz equations for the Coqblin-Schrieffer model
have been solved for the first time to obtain the magnetic susceptibility in
the presence of crystal fields for non-zero temperatures. For the case of N = 4
effective ionic states an analytic expression for the limiting values of the
pseudo-energies has been found facilitating the numerical solution for various
crystal and magnetic field configurations. The single-impurity model applies to
a wide range of dense Kondo systems and has been used before to explain
apparent non-Fermi-liquid behavior. The flattening off of the susceptibility
curves at a substantially higher temperature than the specific heat is shown to
be a general feature of the Coqblin-Schrieffer thermodynamics.

30
The categories of this paper are: q-alg
35
The categories of this paper are: mtrl-th
16
The categories of this paper are: stat
33
The categories of this paper are: plasm-ph
7
The categories of this paper are: hep-th
12
The categories of this paper are: nucl-th
9
The categories of this paper are: nlin
6
The categories of this paper are: astro-ph
3
The categories of this paper are: physics
17
The categories of this paper are: q-fin
37
The categories of this paper are: supr-con
19
The categories of this paper are: eess
24
The categories of this paper are: dg-ga
13
The categories of this paper are: quant-ph
28
The categories of this paper are: alg-geom
27
The categories of this paper are: comp-gas