Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Piercing the Vainshtein screen with anomalous gravitational wave speed:
  Constraints on modified gravity from binary pulsars   By using observations of the Hulse-Taylor pulsar we constrain the
gravitational wave (GW) speed to the level of $10^{-2}$. We apply this result
to scalar-tensor theories that generalize Galileon 4 and 5 models, which
display anomalous propagation speed and coupling to matter for GWs. We argue
that this effect survives conventional screening due to the persistence of a
scalar field gradient inside virialized overdensities, which effectively
"pierces" the Vainshtein screening. In specific branches of solutions, our
result allows to directly constrain the cosmological couplings in the effective
field theory of dark energy formalism.

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The categories of this paper are: q-bio
32
The categories of this paper are: atom-ph
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The categories of this paper are: acc-phys
22
The categories of this paper are: chao-dyn
16
The categories of this paper are: stat
30
The categories of this paper are: q-alg
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The categories of this paper are: hep-lat
13
The categories of this paper are: quant-ph
29
The categories of this paper are: funct-an
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The categories of this paper are: bayes-an
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The categories of this paper are: solv-int
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The categories of this paper are: math-ph
3
The categories of this paper are: physics
31
The categories of this paper are: ao-sci
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The categories of this paper are: nucl-ex
25
The categories of this paper are: patt-sol