Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Neutrino self-energy in external magnetic field   Using the exact propagators in a constant magnetic field, the neutrino
self-energy has been calculated to all orders in the field strength B within
the minimal extension of the Weinberg-Salam model with massive Dirac neutrinos.
A simple and very accurate formula for the self-energy is obtained, that is
valid for 0 < B << m^2_W/e and for and for neutrino transverse momentum to the
magnetic field p_{\perp} << m_W. I discuss the implications of this finding to
the dispersion of massless neutrinos in vacuum and in a charge-symmetric
medium, and to the magnetic field induced resonance transitions of massive
neutrinos inside supernovae and magnetars, and calculate the neutrino magnetic
moment.

26
The categories of this paper are: bayes-an
16
The categories of this paper are: stat
37
The categories of this paper are: supr-con
36
The categories of this paper are: cmp-lg
35
The categories of this paper are: mtrl-th
4
The categories of this paper are: cond-mat
33
The categories of this paper are: plasm-ph
8
The categories of this paper are: hep-ex
12
The categories of this paper are: nucl-th
3
The categories of this paper are: physics
30
The categories of this paper are: q-alg
6
The categories of this paper are: astro-ph
18
The categories of this paper are: econ
23
The categories of this paper are: solv-int
1
The categories of this paper are: cs
10
The categories of this paper are: q-bio