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Stability of the tree-level vacuum in two Higgs doublet models against charge or CP spontaneous violation

P. M. Ferreira·R. Santos·A. Barroso
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Abstract

We show that in two Higgs doublet models at tree-level the potential minimum preserving electric charge and CP symmetries, when it exists, is the global one. Furthermore, we derived a very simple condition, involving only the coefficients of the quartic terms of the potential, that guarantees spontaneous CP breaking.

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P. M. Ferreira, R. Santos, A. Barroso. 2004-10-13. Stability of the tree-level vacuum in two Higgs doublet models against charge or CP spontaneous violation. https://doi.org/10.1016/j.physletb.2004.10.022

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