Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On the Vacuum Propagation of Gravitational Waves   We show that, for any local, causal quantum field theory which couples
covariantly to gravity, and which admits Minkowski spacetime vacuum(a)
invariant under the inhomogeneous proper orthochronous Lorentz group, plane
gravitational waves propagating in such Minkowski vacuum(a) do not dissipate
energy or momentum via quantum field theoretic effects.

29
The categories of this paper are: funct-an
1
The categories of this paper are: cs
23
The categories of this paper are: solv-int
35
The categories of this paper are: mtrl-th
20
The categories of this paper are: acc-phys
32
The categories of this paper are: atom-ph
8
The categories of this paper are: hep-ex
12
The categories of this paper are: nucl-th
28
The categories of this paper are: alg-geom
22
The categories of this paper are: chao-dyn
19
The categories of this paper are: eess
30
The categories of this paper are: q-alg
0
The categories of this paper are: hep-ph
16
The categories of this paper are: stat
14
The categories of this paper are: math-ph
2
The categories of this paper are: math