Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Influence of Band and Orbital Degeneracies on Ferromagnetism in the
  Periodic Anderson Model   We investigate the influence of degeneracies of the conduction band and the
$f$-orbital on the stability of ferromagnetism in the periodic Anderson model.
To this end we calculate the temperature dependence of the inverse
susceptibility for different degeneracies $D^c, D^f$ and conduction electron
densities $n^c$ within the dynamical mean-field theory. A strong increase of
the Curie temperature $T_c$ with the degeneracy $D^f$ of the localized
$f$-level is found. For $D^c \leq D^f$ a simple \emph{ansatz} based on a
mean-field treatment of the RKKY interaction is shown to imply a scaling
behavior of $T_c$ as a function of the conduction electron density per band
which is well obeyed by the numerical results. In particular, $T_c$ is found to
have a maximum at $n^c / D^c\approx 0.3$.

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The categories of this paper are: hep-ph
37
The categories of this paper are: supr-con
18
The categories of this paper are: econ
27
The categories of this paper are: comp-gas
14
The categories of this paper are: math-ph
3
The categories of this paper are: physics
34
The categories of this paper are: chem-ph
26
The categories of this paper are: bayes-an
23
The categories of this paper are: solv-int
29
The categories of this paper are: funct-an
5
The categories of this paper are: gr-qc
25
The categories of this paper are: patt-sol
1
The categories of this paper are: cs
19
The categories of this paper are: eess
24
The categories of this paper are: dg-ga
36
The categories of this paper are: cmp-lg