Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Multi-messenger tests of gravity with weakly lensed gravitational waves   General relativity (GR) predicts concordant trajectories for photons and
gravitational waves (GW). We propose a new multi-messenger avenue (GW-CMB-CMB)
to prove this aspect of fundamental physics by cross-correlating the GW signal
of astrophysical origin with the lensing field derived from the cosmic
microwave background (CMB). This new window will allow robust measurement of
the prediction from GR with high signal-to-noise and will be able to unveil the
true nature of gravity using the GW sources detected by missions such as the
Laser Interferometer Space Antenna (LISA), Einstein Telescope and Cosmic
Explorer.

25
The categories of this paper are: patt-sol
11
The categories of this paper are: hep-lat
16
The categories of this paper are: stat
31
The categories of this paper are: ao-sci
15
The categories of this paper are: nucl-ex
33
The categories of this paper are: plasm-ph
30
The categories of this paper are: q-alg
8
The categories of this paper are: hep-ex
28
The categories of this paper are: alg-geom
32
The categories of this paper are: atom-ph
7
The categories of this paper are: hep-th
10
The categories of this paper are: q-bio
29
The categories of this paper are: funct-an
23
The categories of this paper are: solv-int
3
The categories of this paper are: physics
22
The categories of this paper are: chao-dyn