Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A Possible Quantum-Gravitational Origin of the Neutrino Mass Difference
  ?   We discuss the theoretical possibility that the neutrino mass differences
have part of their origin in the quantum-decoherence-inducing medium of
space-time foam, which characterises some models of quantum gravity, in much
the same way as the celebrated MSW effect, responsible for the contribution to
mass differences when neutrinos pass through ordinary material media. We
briefly describe consequences of such decoherent media in inducing CPT
violation at a fundamental level, which would affect the neutrino oscillation
probability; we speculate on the connection of such phenomena with the role of
neutrinos for providing one possible source of a cosmological constant in the
Universe, of the phenomenologically right order of magnitude. Finally we
discuss possible experimental constraints on the amount of neutrino mass
differences induced by quantum gravity, which are based on fits of a simple
decoherence model with all the currently available neutrino data.

17
The categories of this paper are: q-fin
21
The categories of this paper are: adap-org
22
The categories of this paper are: chao-dyn
18
The categories of this paper are: econ
15
The categories of this paper are: nucl-ex
36
The categories of this paper are: cmp-lg
9
The categories of this paper are: nlin
10
The categories of this paper are: q-bio
13
The categories of this paper are: quant-ph
32
The categories of this paper are: atom-ph
7
The categories of this paper are: hep-th
31
The categories of this paper are: ao-sci
2
The categories of this paper are: math
16
The categories of this paper are: stat
33
The categories of this paper are: plasm-ph
25
The categories of this paper are: patt-sol