Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: CPT Violation and Decoherence in Quantum Gravity   In this brief review I discuss ways and tests of CPT-Violation in the context
of quantum gravity theories with space-time foam vacua, which entail quantum
decoherence of matter propagating in such backgrounds. I cover a wide variety
of sensitive probes, ranging from cosmic neutrinos to meson factories. I pay
particular emphasis on associating the latter with specific, probably unique
("smoking-gun"), effects of this type of CPT Violation, related to a
modification of Einstein-Podolsky-Rosen (EPR) correlations in the entangled
states of the relevant neutral mesons. I also present some semi-microscopic
estimates of these latter effects, in the context of a specific string-inspired
model of space-time foam ("D-particle foam").

25
The categories of this paper are: patt-sol
10
The categories of this paper are: q-bio
28
The categories of this paper are: alg-geom
23
The categories of this paper are: solv-int
11
The categories of this paper are: hep-lat
33
The categories of this paper are: plasm-ph
26
The categories of this paper are: bayes-an
1
The categories of this paper are: cs
14
The categories of this paper are: math-ph
21
The categories of this paper are: adap-org
27
The categories of this paper are: comp-gas
4
The categories of this paper are: cond-mat
30
The categories of this paper are: q-alg
31
The categories of this paper are: ao-sci
3
The categories of this paper are: physics
2
The categories of this paper are: math