Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A Scheme for radiative CP violation   We present a simple model in which CP symmetry is spontaneously broken only
after the radiative corrections are taken into account. The model includes two
Higgs-boson doublets and two right-handed singlet neutrinos which induce the
necessary non-hermitian interaction. To evade the Georgi-Pais theorem, some
fine-tuning of coupling constants is necessary. However, we show that such
fine-tuning is natural in the technical sense as it is protected by symmetry.
Some phenomenological consequences are also discussed.

28
The categories of this paper are: alg-geom
33
The categories of this paper are: plasm-ph
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The categories of this paper are: comp-gas
22
The categories of this paper are: chao-dyn
3
The categories of this paper are: physics
32
The categories of this paper are: atom-ph
30
The categories of this paper are: q-alg
36
The categories of this paper are: cmp-lg
10
The categories of this paper are: q-bio
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The categories of this paper are: eess
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The categories of this paper are: supr-con
2
The categories of this paper are: math
7
The categories of this paper are: hep-th
8
The categories of this paper are: hep-ex
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The categories of this paper are: adap-org
26
The categories of this paper are: bayes-an