Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Relic neutrino asymmetry evolution from first principles   The exact Quantum Kinetic Equations for a two-flavour active-sterile neutrino
system are used to provide a systematic derivation of approximate evolution
equations for the relic neutrino asymmetry. An extension of the adiabatic
approximation for matter-affected neutrino oscillations is developed which
incorporates decoherence due to collisions. Exact and approximate expressions
for the decoherence and repopulation functions are discussed. A first pass is
made over the exact treatment of multi-flavour partially incoherent
oscillations.

26
The categories of this paper are: bayes-an
36
The categories of this paper are: cmp-lg
30
The categories of this paper are: q-alg
16
The categories of this paper are: stat
18
The categories of this paper are: econ
15
The categories of this paper are: nucl-ex
25
The categories of this paper are: patt-sol
11
The categories of this paper are: hep-lat
27
The categories of this paper are: comp-gas
34
The categories of this paper are: chem-ph
19
The categories of this paper are: eess
17
The categories of this paper are: q-fin
9
The categories of this paper are: nlin
20
The categories of this paper are: acc-phys
21
The categories of this paper are: adap-org
4
The categories of this paper are: cond-mat