Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Matter-Sector Lorentz Violation in Binary Pulsars   Violations of local Lorentz invariance in the gravitationally coupled matter
sector have yet to be sought in strong-gravity systems. We present the
implications of matter-sector Lorentz violation for orbital perturbations in
pulsar systems and show that the analysis of pulsar data can provide
sensitivities to these effects that exceed the current reach of solar system
and laboratory tests by several orders of magnitude.

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The categories of this paper are: astro-ph
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The categories of this paper are: dg-ga
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The categories of this paper are: chao-dyn
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The categories of this paper are: math-ph
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The categories of this paper are: econ
30
The categories of this paper are: q-alg
34
The categories of this paper are: chem-ph
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The categories of this paper are: hep-ex
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The categories of this paper are: mtrl-th
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The categories of this paper are: adap-org
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The categories of this paper are: bayes-an
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The categories of this paper are: cond-mat
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The categories of this paper are: funct-an
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The categories of this paper are: physics
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The categories of this paper are: acc-phys
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The categories of this paper are: nucl-ex