Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Nonrelativistic Quantum Hamiltonian for Lorentz Violation   A method is presented for deriving the nonrelativistic quantum hamiltonian of
a free massive fermion from the relativistic lagrangian of the
Lorentz-violating standard-model extension. It permits the extraction of terms
at arbitrary order in a Foldy-Wouthuysen expansion in inverse powers of the
mass. The quantum particle hamiltonian is obtained and its nonrelativistic
limit is given explicitly to third order.

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The categories of this paper are: q-bio
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The categories of this paper are: alg-geom
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The categories of this paper are: q-alg
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The categories of this paper are: comp-gas
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The categories of this paper are: hep-th
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The categories of this paper are: atom-ph
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The categories of this paper are: nucl-th
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The categories of this paper are: cs
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The categories of this paper are: hep-lat
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The categories of this paper are: chao-dyn
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The categories of this paper are: eess
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The categories of this paper are: hep-ex
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The categories of this paper are: solv-int
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The categories of this paper are: math
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The categories of this paper are: math-ph
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The categories of this paper are: dg-ga