Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Dynamical Majorana Neutrino Masses and Axions   We discuss dynamical mass generation for fermions and pseudoscalar fields
(axion-like particles (ALP)), in the context of effective theories containing
Yukawa type interactions between the fermions and ALPs. We discuss both
Hermitian and non-Hermitian Yukawa interactions, which are motivated in the
context of some scenarios for radiative (anomalous) Majorana sterile neutrino
masses in some effective field theories. The latter contain shift-symmetry
breaking Yukawa interactions between sterile neutrinos and ALPs. We show that,
for a Hermitian Yukawa interaction, there is no (pseudo)scalar dynamical mass
generation, but there is fermion dynamical mass generation, provided one adds a
bare (pseudo)scalar mass. The situation is opposite for an anti-Hermitian
Yukawa model: there is (pseudo)scalar dynamical mass generation, but no fermion
dynamical mass generation.In the presence of additional attractive four-fermion
interactions, dynamical fermion mass generation can occur in these models,
under appropriate conditions and range of their couplings.

10
The categories of this paper are: q-bio
28
The categories of this paper are: alg-geom
13
The categories of this paper are: quant-ph
36
The categories of this paper are: cmp-lg
18
The categories of this paper are: econ
2
The categories of this paper are: math
12
The categories of this paper are: nucl-th
11
The categories of this paper are: hep-lat
3
The categories of this paper are: physics
37
The categories of this paper are: supr-con
19
The categories of this paper are: eess
33
The categories of this paper are: plasm-ph
23
The categories of this paper are: solv-int
14
The categories of this paper are: math-ph
5
The categories of this paper are: gr-qc
16
The categories of this paper are: stat