Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Locality and exponential error reduction in numerical lattice gauge
  theory   In non-abelian gauge theories without matter fields, expectation values of
large Wilson loops and loop correlation functions are difficult to compute
through numerical simulation, because the signal-to-noise ratio is very rapidly
decaying for increasing loop sizes. Using a multilevel scheme that exploits the
locality of the theory, we show that the statistical errors in such
calculations can be exponentially reduced. We explicitly demonstrate this in
the SU(3) theory, for the case of the Polyakov loop correlation function, where
the efficiency of the simulation is improved by many orders of magnitude when
the area bounded by the loops exceeds 1 fm^2.

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The categories of this paper are: quant-ph
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The categories of this paper are: patt-sol
3
The categories of this paper are: physics
30
The categories of this paper are: q-alg
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The categories of this paper are: nucl-th
31
The categories of this paper are: ao-sci
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The categories of this paper are: dg-ga
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The categories of this paper are: alg-geom
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The categories of this paper are: hep-ex
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The categories of this paper are: plasm-ph
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The categories of this paper are: supr-con
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The categories of this paper are: cmp-lg
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The categories of this paper are: acc-phys
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The categories of this paper are: comp-gas
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The categories of this paper are: nlin
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The categories of this paper are: adap-org