Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Correlated Electrons and Mass Enhancement on the Beta-Mn Type Lattice   Electronic structure and electron correlations of the Hubbard model on the
Beta-Mn lattice have been investigated on the basis of the momentum dependent
local ansatz wavefunction method. It is found that the electrons on the Beta-Mn
lattice are significantly correlated as compared with those on the face
centered cubic (fcc) and the body centered cubic (bcc) lattices; the
correlation energy gain of the Beta-Mn lattice structure is the largest among
the Beta-Mn, the fcc, and the bcc structures, and the charge fluctuations show
a significant suppression. In particular, it is found that the mass enhancement
factor on the Beta-Mn lattice shows a large peak around the electron number per
atom n=1.1 when n is varied at the typical Coulomb interaction energy strength
of transition metals. It is pointed that the large mass enhancement may explain
anomalous electronic specific heat coefficient in Beta-Mn.

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The categories of this paper are: astro-ph
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The categories of this paper are: q-bio
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The categories of this paper are: alg-geom
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The categories of this paper are: physics
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The categories of this paper are: econ
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The categories of this paper are: nucl-th
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The categories of this paper are: supr-con
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The categories of this paper are: hep-ph
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The categories of this paper are: adap-org
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The categories of this paper are: quant-ph
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The categories of this paper are: solv-int
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The categories of this paper are: ao-sci
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The categories of this paper are: hep-ex
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The categories of this paper are: dg-ga
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The categories of this paper are: chao-dyn
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The categories of this paper are: gr-qc