Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Testing gravity with $E_G$: mapping theory onto observations   We present a complete derivation of the observationally motivated definition
of the modified gravity statistic $E_G$. Using this expression, we investigate
how variations to theory and survey parameters may introduce uncertainty in the
general relativistic prediction of $E_G$. We forecast errors on $E_G$ for
measurements using two combinations of upcoming surveys, and find that
theoretical uncertainties may dominate for a futuristic measurement. Finally,
we compute predictions of $E_G$ under modifications to general relativity in
the quasistatic regime, and comment on the pros and cons of using $E_G$ to test
gravity with future surveys.

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The categories of this paper are: hep-ph
27
The categories of this paper are: comp-gas
9
The categories of this paper are: nlin
35
The categories of this paper are: mtrl-th
24
The categories of this paper are: dg-ga
14
The categories of this paper are: math-ph
26
The categories of this paper are: bayes-an
5
The categories of this paper are: gr-qc
33
The categories of this paper are: plasm-ph
30
The categories of this paper are: q-alg
18
The categories of this paper are: econ
36
The categories of this paper are: cmp-lg
21
The categories of this paper are: adap-org
19
The categories of this paper are: eess
7
The categories of this paper are: hep-th
22
The categories of this paper are: chao-dyn