Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Spin and Contextuality in Extended de Broglie-Bohm-Bell Quantum
  Mechanics   This paper introduces an extension of the de Broglie-Bohm-Bell formulation of
quantum mechanics, which includes intrinsic particle degrees of freedom, such
as spin, as elements of reality. To evade constraints from the Kochen-Specker
theorem the discrete spin values refer to a specific basis -- i.e., a single
spin vector orientation for each particle; these spin orientations are,
however, not predetermined, but dynamic and guided by the (reduced, spin-only)
wave function of the system, which is conditional on the realized location
values of the particles. In this way, the unavoidable contextuality of spin is
provided by the wave function and its realized particle configuration, whereas
spin is still expressed as a local property of the individual particles. This
formulation, which furthermore features a rigorous discrete-time stochastic
dynamics, allows for numerical simulations of particle systems with entangled
spin, such as Bohm's version of the EPR experiment.

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The categories of this paper are: nucl-th
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The categories of this paper are: math-ph
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The categories of this paper are: cond-mat
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The categories of this paper are: physics
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The categories of this paper are: dg-ga
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The categories of this paper are: hep-lat
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The categories of this paper are: eess
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The categories of this paper are: acc-phys
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The categories of this paper are: astro-ph
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The categories of this paper are: hep-ex
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The categories of this paper are: adap-org
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The categories of this paper are: funct-an
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The categories of this paper are: stat
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The categories of this paper are: econ
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The categories of this paper are: cs
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The categories of this paper are: alg-geom