Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The ideal relativistic spinning gas: polarization and spectra   We study the physics of the ideal relativistic rotating gas at
thermodynamical equilibrium and provide analytical expressions of the momentum
spectra and polarization vector for the case of massive particles with spin 1/2
and 1. We show that the finite angular momentum J entails an anisotropy in
momentum spectra, with particles emitted orthogonally to J having, on average,
a larger momentum than along its direction. Unlike in the non-relativistic
case, the proper polarization vector turns out not to be aligned with the total
angular momentum with a non-trivial momentum dependence.

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The categories of this paper are: solv-int
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The categories of this paper are: ao-sci
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The categories of this paper are: chem-ph
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The categories of this paper are: acc-phys
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The categories of this paper are: chao-dyn
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The categories of this paper are: patt-sol
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The categories of this paper are: math-ph
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The categories of this paper are: hep-ex
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The categories of this paper are: hep-lat
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The categories of this paper are: stat
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The categories of this paper are: astro-ph
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The categories of this paper are: quant-ph
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The categories of this paper are: hep-ph
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The categories of this paper are: mtrl-th
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The categories of this paper are: q-alg
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The categories of this paper are: adap-org