Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Comment on "New conditions for a total neutrino conversion in a medium"   We show that the conditions for total neutrino conversion found in [1] are
equivalent to the conditions of maximal depth (parametric resonance) and
($\pi/2 + \pi k$) - phase of parametric oscillations. Therefore the effects
considered in [1] are a particular case of the parametric resonance in neutrino
oscillations. The existence of strong enhancement peaks in transition
probability P rather than the condition P=1 is of physical relevance. We
comment on possible realizations and implications of the parametric enhancement
of neutrino oscillations.

1
The categories of this paper are: cs
28
The categories of this paper are: alg-geom
29
The categories of this paper are: funct-an
23
The categories of this paper are: solv-int
15
The categories of this paper are: nucl-ex
34
The categories of this paper are: chem-ph
37
The categories of this paper are: supr-con
36
The categories of this paper are: cmp-lg
24
The categories of this paper are: dg-ga
19
The categories of this paper are: eess
20
The categories of this paper are: acc-phys
27
The categories of this paper are: comp-gas
9
The categories of this paper are: nlin
17
The categories of this paper are: q-fin
33
The categories of this paper are: plasm-ph
35
The categories of this paper are: mtrl-th