Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Nonsequential positive-operator-valued measurements on entangled mixed
  states do not always violate a Bell inequality   We present a local-hidden-variable model for positive-operator-valued
measurements (an LHVPOV model) on a class of entangled generalized Werner
states, thus demonstrating that such measurements do not always violate a
Bell-type inequality. We also show that, in general, if the state $\rho'$ can
be obtained from $\rho$ with certainty by local quantum operations without
classical communication then an LHVPOV model for the state $\rho$ implies the
existence of such a model for $\rho'$.

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The categories of this paper are: cs
9
The categories of this paper are: nlin
14
The categories of this paper are: math-ph
25
The categories of this paper are: patt-sol
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The categories of this paper are: plasm-ph
36
The categories of this paper are: cmp-lg
26
The categories of this paper are: bayes-an
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The categories of this paper are: hep-ph
28
The categories of this paper are: alg-geom
35
The categories of this paper are: mtrl-th
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The categories of this paper are: comp-gas
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The categories of this paper are: solv-int
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The categories of this paper are: adap-org
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The categories of this paper are: eess
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The categories of this paper are: physics
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The categories of this paper are: hep-ex