Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2011-06-17
JHEP 1108:020,2011
Physics
High Energy Physics
High Energy Physics - Phenomenology
89 pages, 13 tables and 12 figures (version as to appear in JHEP)
Scientific paper
We perform a systematic study of generic accidental Higgs-family and CP symmetries that could occur in the two-Higgs-doublet-model potential, based on a Majorana scalar-field formalism which realizes a subgroup of GL(8,C). We derive the general conditions of convexity and stability of the scalar potential and present analytical solutions for two non-zero neutral vacuum expectation values of the Higgs doublets for a typical set of six symmetries, in terms of the gauge-invariant parameters of the theory. By means of a homotopy-group analysis, we identify the topological defects associated with the spontaneous symmetry breaking of each symmetry, as well as the massless Goldstone bosons emerging from the breaking of the continuous symmetries. We find the existence of domain walls from the breaking of Z_2, CP1 and CP2 discrete symmetries, vortices in models with broken U(1)_PQ and CP3 symmetries and a global monopole in the SO(3)_HF-broken model. The spatial profile of the topological defect solutions is studied in detail, as functions of the potential parameters of the two-Higgs doublet model. The application of our Majorana scalar-field formalism in studying more general scalar potentials that are not constrained by the U(1)_Y hypercharge symmetry is discussed. In particular, the same formalism may be used to properly identify seven additional symmetries that may take place in a U(1)_Y-invariant scalar potential.
Battye Richard A.
Brawn Gary D.
Pilaftsis Apostolos
No associations
LandOfFree
Vacuum Topology of the Two Higgs Doublet Model does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Vacuum Topology of the Two Higgs Doublet Model, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Vacuum Topology of the Two Higgs Doublet Model will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-695979