Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Quantitative Aspects of the Dynamical CPA in Harmonic Approximation   Magnetic and electronic properties of the Hubbard model on the Bethe and fcc
lattices in infinite dimensions have been investigated numerically on the basis
of the dynamical coherent potential approximation (CPA) theory combined with
the harmonic approximation (HA) in order to clarify the quantitative aspects of
the theory. It is shown that the dynamical CPA+HA reproduces well the
sublattice magnetization, the magnetizations, susceptibilities, and the N\'eel
temperatures ($T_{\rm N}$) as well as the Curie temperatures calculated by the
Quantum Monte-Carlo (QMC) method. The critical Coulomb interactions ($U_{\rm
c}$) for the metal-insulator (MI) transition are also shown to agree with the
QMC results above $T_{\rm N}$. Below $T_{\rm N}$, $U_{\rm c}$ deviate from the
QMC values by about 30% at low temperature regime. These results indicate that
the dynamical CPA+HA is applicable to the quantitative description of the
magnetic properties in high dimensional systems, but one needs to take into
account higher-order dynamical corrections in order to describe the MI
transition quantitatively at low temperatures.

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The categories of this paper are: plasm-ph
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The categories of this paper are: acc-phys
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The categories of this paper are: alg-geom
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The categories of this paper are: q-bio
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The categories of this paper are: math
3
The categories of this paper are: physics
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The categories of this paper are: quant-ph
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The categories of this paper are: math-ph
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The categories of this paper are: stat
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The categories of this paper are: q-fin
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The categories of this paper are: gr-qc
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The categories of this paper are: nlin
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The categories of this paper are: cmp-lg
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The categories of this paper are: atom-ph
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The categories of this paper are: chem-ph
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The categories of this paper are: patt-sol