Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: CP violation in extended Higgs sectors   We discuss how one can identify CP violation (and conservation) in
multi-Higgs-doublet potentials. After a brief review of CP violation in the
2HDM, we refer to the fact that for NHDM with $N \geq 3$ the well known methods
useful in the case $N = 2$ have not been generalized in order to provide a set
of well defined necessary and sufficient conditions for CP conservation. We
then present a simple method, proposed by the authors, to be used in such
cases. Two non-trivial examples based on an $S_3$-symmetric three-doublet model
are analyzed by means of this new method.

11
The categories of this paper are: hep-lat
33
The categories of this paper are: plasm-ph
6
The categories of this paper are: astro-ph
20
The categories of this paper are: acc-phys
9
The categories of this paper are: nlin
24
The categories of this paper are: dg-ga
34
The categories of this paper are: chem-ph
2
The categories of this paper are: math
26
The categories of this paper are: bayes-an
35
The categories of this paper are: mtrl-th
17
The categories of this paper are: q-fin
37
The categories of this paper are: supr-con
18
The categories of this paper are: econ
30
The categories of this paper are: q-alg
31
The categories of this paper are: ao-sci
22
The categories of this paper are: chao-dyn