Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Very Special Relativity and Lorentz Violating Theories   Very special relativity (VSR) keeps the main features of special relativity
but breaks rotational invariance. It can not be regarded as a fundamental
symmetry of nature because many observed phenomena depend on the existence of
Lorentz boosts. However, within the scope of Lorentz violating theories it can
have a role since it is breaking Lorentz symmetry in a very mild way. In this
context, when VSR terms are incorporated in a Lorentz invariant theory several
possibilities are allowed. In order to generate such terms systematically we
start with a formulation for a spinning particle in VSR. It is then coupled
minimally to the electromagnetic field and a gyromagnetic factor is added to
give rise to a magnetic moment. In order to analyze the effects of VSR in
Thomas precession a spin vector is then proposed in terms of the spinning
particle variables. It is then found the VSR contributions to the equation
which determines the spin precession angular velocity.

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The categories of this paper are: math
26
The categories of this paper are: bayes-an
11
The categories of this paper are: hep-lat
36
The categories of this paper are: cmp-lg
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The categories of this paper are: cs
14
The categories of this paper are: math-ph
25
The categories of this paper are: patt-sol
13
The categories of this paper are: quant-ph
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The categories of this paper are: acc-phys
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The categories of this paper are: cond-mat
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The categories of this paper are: astro-ph
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The categories of this paper are: adap-org
18
The categories of this paper are: econ
31
The categories of this paper are: ao-sci
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The categories of this paper are: stat
12
The categories of this paper are: nucl-th