Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A longitudinal component in massive gravitational waves arising from a
  bimetric theory of gravity   After a brief review of the work of de Paula, Miranda and Marinho on massive
gravitational waves arising from a bimetric theory of gravity, in this paper it
is shown that the presence of the mass generates a longi- tudinal component in
a particular polarization of the wave. The effect of this polarization on test
masses is performed using the geodesic deviation. A the end of this paper the
detectability of this particular polarization is also discussed, showing that
its angular dependence could, in princi- ple, discriminate such polarization
with respect the two ones of general relativity, if present or future detectors
will achieve a high sensitivity.

8
The categories of this paper are: hep-ex
19
The categories of this paper are: eess
35
The categories of this paper are: mtrl-th
15
The categories of this paper are: nucl-ex
21
The categories of this paper are: adap-org
25
The categories of this paper are: patt-sol
16
The categories of this paper are: stat
3
The categories of this paper are: physics
18
The categories of this paper are: econ
31
The categories of this paper are: ao-sci
37
The categories of this paper are: supr-con
1
The categories of this paper are: cs
23
The categories of this paper are: solv-int
13
The categories of this paper are: quant-ph
6
The categories of this paper are: astro-ph
12
The categories of this paper are: nucl-th