Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The Global Minimum of the Effective Potential of the Many-Electron
  System with Delta-Interaction   We prove that the global minimum of the real part of the full effective
potential of the many-electron system with attractive delta-interaction is in
fact given by the BCS mean field configuration. This is a consequence of a
simple bound which is obtained by applying Hadamard's inequality to the
functional determinant. The second order Taylor expansion around the minimum is
computed.

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The categories of this paper are: mtrl-th
12
The categories of this paper are: nucl-th
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The categories of this paper are: q-alg
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The categories of this paper are: plasm-ph
1
The categories of this paper are: cs
22
The categories of this paper are: chao-dyn
6
The categories of this paper are: astro-ph
18
The categories of this paper are: econ
20
The categories of this paper are: acc-phys
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The categories of this paper are: chem-ph
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The categories of this paper are: funct-an
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The categories of this paper are: gr-qc
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The categories of this paper are: solv-int
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The categories of this paper are: quant-ph
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The categories of this paper are: supr-con
8
The categories of this paper are: hep-ex