Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Confinement and the quark Fermi-surface in SU(2N) QCD-like theories   Yang-Mills theories with a gauge group SU(N_c\=3)and quark matter in the
fundamental representation share many properties with the theory of strong
interactions, QCD with N_c=3. We show that, for N_c even and in the confinement
phase, the gluonic average of the quark determinant is independent of the
boundary conditions, periodic or anti-periodic ones. We then argue that a Fermi
sphere of quarks can only exist under extreme conditions when the centre
symmetry is spontaneously broken and colour is liberated. Our findings are
supported by lattice gauge simulations for N_c=2...5 and are illustrated by
means of a simple quark model.

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The categories of this paper are: nlin
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The categories of this paper are: dg-ga
5
The categories of this paper are: gr-qc
18
The categories of this paper are: econ
1
The categories of this paper are: cs
3
The categories of this paper are: physics
33
The categories of this paper are: plasm-ph
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The categories of this paper are: adap-org
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The categories of this paper are: q-fin
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The categories of this paper are: acc-phys
4
The categories of this paper are: cond-mat
31
The categories of this paper are: ao-sci
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The categories of this paper are: chao-dyn
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The categories of this paper are: math-ph
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The categories of this paper are: math
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The categories of this paper are: nucl-ex