Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Compton Scattering of Gamma-Ray Vortex with Laguerre Gaussian Wave
  Function   In this work, we report calculation for Compton scattering of a gamma-ray
vortex with Laguerre Gaussian wave function on an electron in the framework of
the relativistic quantum mechanics. We have found the following unexpected
feature. The momentum of scattered photon distributes outside of the reaction
plane determined by the incident photon and the scattered electron, and hence
the energy of the scattered photon also distributes. This novel result
indicates that one can identify a gamma-ray vortex by measuring coincidentally
the scattered angles of the electron and photon.

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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: quant-ph
6
The categories of this paper are: astro-ph
30
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: solv-int
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The categories of this paper are: bayes-an
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The categories of this paper are: ao-sci
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The categories of this paper are: nucl-ex
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The categories of this paper are: math
4
The categories of this paper are: cond-mat
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The categories of this paper are: econ
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The categories of this paper are: funct-an
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The categories of this paper are: hep-lat
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The categories of this paper are: comp-gas