Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The Impact of Lorentz Violation on the Klein Tunneling Effect   We discuss the impact of a tiny Lorentz-violating $b^\mu$ term on the one
dimensional motion of a Dirac particle scattering on a rectangular barrier. We
assume the experiment is performed in a particular inertial frame, where the
components of $b^\mu$ are assumed constants. The results show that
Lorentz-violation modification to the transmission rate depends on the observer
Lorentz nature of $b^\mu$. For a spacelike or lightlike $b^\mu$ the induced
resonant frequency shift depends on the polarization, while for timelike
$b^\mu$ there is essentially no modification.

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The categories of this paper are: q-fin
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The categories of this paper are: stat
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The categories of this paper are: q-alg
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The categories of this paper are: atom-ph
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The categories of this paper are: econ
1
The categories of this paper are: cs
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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: alg-geom
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The categories of this paper are: solv-int
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The categories of this paper are: physics
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The categories of this paper are: bayes-an
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The categories of this paper are: mtrl-th
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The categories of this paper are: cond-mat
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The categories of this paper are: hep-th
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The categories of this paper are: hep-lat