Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Counting Gribov copies   We show that an explicit counting of Gribov copies can shed light on the
infrared behavior of non-abelian gauge theories. A power-law growth of the
number of copies suppresses gluon propagation while the distribution of copies
along a gauge orbit implies an enhanced density of small eigenvalues of the
Fadeev-Popov operator. Both of these phenomena are related to confinement. The
discreteness in the number of copies and the associated nonlocality also has
implications for vacuum energy.

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The categories of this paper are: gr-qc
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The categories of this paper are: physics
37
The categories of this paper are: supr-con
11
The categories of this paper are: hep-lat
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The categories of this paper are: nlin
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The categories of this paper are: q-fin
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The categories of this paper are: mtrl-th
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The categories of this paper are: chao-dyn
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The categories of this paper are: alg-geom
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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: dg-ga
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The categories of this paper are: plasm-ph
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The categories of this paper are: cond-mat
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The categories of this paper are: eess
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The categories of this paper are: funct-an