Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Constraining Gravity at the Largest Scales through CMB Lensing and
  Galaxy Velocities   We demonstrate a new method to constrain gravity on the largest cosmological
scales by combining measurements of cosmic microwave background (CMB) lensing
and the galaxy velocity field. $E_G$ is a statistic, constructed from a
gravitational lensing tracer and a measure of velocities such as redshift-space
distortions (RSD), that can discriminate between gravity models while being
independent of clustering bias and $\sigma_8$. While traditionally, the lensing
field for $E_G$ has been probed through galaxy lensing, CMB lensing has been
proposed as a more robust tracer of the lensing field for $E_G$ at higher
redshifts while avoiding intrinsic alignments. We perform the largest-scale
measurement of $E_G$ ever, up to 150 Mpc/$h$, by cross-correlating the Planck
CMB lensing map with the Sloan Digital Sky Survey III (SDSS-III) CMASS galaxy
sample and combining this with our measurement of the CMASS auto-power spectrum
and the RSD parameter $\beta$. We report $E_G(z=0.57)=0.243\pm0.060$ (stat)
$\pm0.013$ (sys), a measurement in tension with the general relativity
prediction at a level of 2.6$\sigma$. Note that our $E_G$ measurement deviates
from GR only at scales greater than 80 Mpc/$h$, scales which have not been
probed by previous $E_G$ tests. Upcoming surveys, which will provide an
order-of-magnitude reduction in statistical errors, can significantly constrain
alternative gravity models when combined with better control of systematics.

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The categories of this paper are: econ
19
The categories of this paper are: eess
16
The categories of this paper are: stat
8
The categories of this paper are: hep-ex
29
The categories of this paper are: funct-an
0
The categories of this paper are: hep-ph
5
The categories of this paper are: gr-qc
25
The categories of this paper are: patt-sol
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The categories of this paper are: nlin
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The categories of this paper are: bayes-an
30
The categories of this paper are: q-alg
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The categories of this paper are: supr-con
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The categories of this paper are: math-ph
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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: math