Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Landau Fermi Liquid Picture of Spin Density Functional Theory:
  Strutinsky Approach to Quantum Dots   We analyze the ground state energy and spin of quantum dots obtained from
spin density functional theory (SDFT) calculations. First, we introduce a
Strutinsky-type approximation, in which quantum interference is treated as a
correction to a smooth Thomas-Fermi description. For large irregular dots, we
find that the second-order Strutinsky expressions have an accuracy of about 5
percent compared to the full SDFT and capture all the qualitative features.
Second, we perform a random matrix theory/random plane wave analysis of the
Strutinsky SDFT expressions. The results are statistically similar to the SDFT
quantum dot statistics. Finally, we note that the second-order Strutinsky
approximation provides, in essence, a Landau Fermi liquid picture of spin
density functional theory. For instance, the leading term in the spin channel
is simply the familiar exchange constant. A direct comparison between SDFT and
the perturbation theory derived ``universal Hamiltonian'' is thus made
possible.

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The categories of this paper are: acc-phys
31
The categories of this paper are: ao-sci
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The categories of this paper are: chem-ph
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The categories of this paper are: hep-th
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The categories of this paper are: astro-ph
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The categories of this paper are: gr-qc
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The categories of this paper are: patt-sol
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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: alg-geom
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The categories of this paper are: q-fin
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The categories of this paper are: dg-ga
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The categories of this paper are: cs
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The categories of this paper are: chao-dyn
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The categories of this paper are: hep-ex
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The categories of this paper are: bayes-an