Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Mass Varying Neutrinos in Supernovae   We study the consequences on the neutrino oscillation parameter space, mixing
angle ($\tan^2\theta$) and vacuum mass difference ($\Delta m^2_0$), when mass
varying neutrino (MaVaN) models are assumed in a supernova environment. We
consider electronic to sterile channels $\nu_e \rightarrow \nu_s$ and
$\bar\nu_e \rightarrow \bar\nu_s$ in two-flavor scenario. In a given model of
MaVaN mechanism, we induce a position-dependent effective mass difference,
$\Delta \tilde m^2(r)$, where $r$ is the distance from the supernova core, that
changes the neutrino and anti-neutrino flavour conversion probabilities. We
study the constraints on the mixing angle and vacuum mass difference coming
from r-process and the SN1987A data. Our result is the appearance of a new
exclusion region for very small mixing angles, $\tan^2\theta=10^{-6}-10^{-2}$,
and small vacuum mass difference, $\Delta m^2_0=~1-20$ eV$^2$, due the MaVaN
mechanism.

21
The categories of this paper are: adap-org
12
The categories of this paper are: nucl-th
18
The categories of this paper are: econ
1
The categories of this paper are: cs
5
The categories of this paper are: gr-qc
35
The categories of this paper are: mtrl-th
34
The categories of this paper are: chem-ph
10
The categories of this paper are: q-bio
7
The categories of this paper are: hep-th
26
The categories of this paper are: bayes-an
8
The categories of this paper are: hep-ex
19
The categories of this paper are: eess
17
The categories of this paper are: q-fin
37
The categories of this paper are: supr-con
30
The categories of this paper are: q-alg
9
The categories of this paper are: nlin