Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Non-standard neutrino self-interactions in a supernova and fast flavor
  conversions   We study the effects of non-standard self-interactions (NSSI) of neutrinos
streaming out of a core-collapse supernova. We show that with NSSI, the
standard linear stability analysis gives rise to linearly as well as
exponentially growing solutions. For a two-box spectrum, we demonstrate
analytically that flavor-preserving NSSI lead to a suppression of bipolar
collective oscillations. In the intersecting four-beam model, we show that
flavor-violating NSSI can lead to fast oscillations even when the angle between
the neutrino and antineutrino beams is obtuse, which is forbidden in the
Standard Model. This leads to the new possibility of fast oscillations in a
two-beam system with opposing neutrino-antineutrino fluxes, even in the absence
of any spatial inhomogeneities. Finally, we solve the full non-linear equations
of motion in the four-beam model numerically, and explore the interplay of fast
and slow flavor conversions in the long-time behavior, in the presence of NSSI.

31
The categories of this paper are: ao-sci
5
The categories of this paper are: gr-qc
2
The categories of this paper are: math
14
The categories of this paper are: math-ph
26
The categories of this paper are: bayes-an
12
The categories of this paper are: nucl-th
27
The categories of this paper are: comp-gas
13
The categories of this paper are: quant-ph
3
The categories of this paper are: physics
22
The categories of this paper are: chao-dyn
9
The categories of this paper are: nlin
10
The categories of this paper are: q-bio
37
The categories of this paper are: supr-con
36
The categories of this paper are: cmp-lg
1
The categories of this paper are: cs
34
The categories of this paper are: chem-ph