86 citations · 222 across the 11 of their papers we have counts for
11 papers
Representation-theoretical characterization of canonical custodial symmetry in NHDM potentials
R. Plantey, M. Aa. Solberg
By considering the basis-covariant constituents of N-Higgs-doublet potentials, we derive necessary and sufficient conditions for canonical SO(4)_C Custodial Symmetry (CS) of potent…
Computable conditions for order-2 symmetry in NHDM potentials
R. Plantey, M. Aa. Solberg
We derive necessary and sufficient conditions for order-2 () symmetry in -Higgs-doublet potentials for . The conditions, which are formulated as relations between…
Light scalars in the Weinberg 3HDM potential with spontaneous CP violation
R. Plantey, O. M. Ogreid, P. Osland +2
The -symmetric 3HDM potential, sometimes called Weinberg's 3HDM potential, can accommodate both explicit and spontaneous CP violation as well as natu…
Weinberg's 3HDM potential with spontaneous CP violation
R. Plantey, O. M. Ogreid, P. Osland +2
We study the potential of Weinberg's -symmetric three-Higgs-doublet model (3HDM). The potential is designed to accommodate CP violation in the scala…
Conditions for the custodial symmetry in multi-Higgs-doublet models
M. Aa. Solberg
We derive basis-independent, necessary and sufficient conditions for the custodial symmetry in N-Higgs-doublet models (NHDM) for N > 2, and apply them on some 3HDM examples.
On the terms violating the custodial symmetry in multi-Higgs-doublet models
M. Aa. Solberg
We prove that a generic multi-Higgs-doublet model (NHDM) generally must contain terms in the potential that violate the custodial symmetry. This is done by showing that the O(4) vi…
Symmetry and Mass Degeneration in Multi-Higgs-Doublet Models
K. Olaussen, P. Osland, M. Aa. Solberg
We investigate possible symmetry properties of the scalar sector of Multi-Higgs-Doublet Models, and, to some extent, the generalization of such models to gauge groups other than $S…
Annihilations of superheavy dark matter in superdense clumps
V. Berezinsky, V. Dokuchaev, Yu. Eroshenko +2
Superheavy dark matter (SHDM) exchanges energy with its environment much slower than particles with masses close to the electroweak (EW) scale and has therefore different small-sca…
Superdense cosmological dark matter clumps
V. Berezinsky, V. Dokuchaev, Yu. Eroshenko +2
The formation and evolution of superdense clumps (or subhalos) is studied. Such clumps of dark matter (DM) can be produced by many mechanisms, most notably by spiky features in the…
On the role of electroweak bremsstrahlung for indirect dark matter signatures
M. Kachelriess, P. D. Serpico, M. Aa. Solberg
Interpretations of indirect searches for dark matter (DM) require theoretical predictions for the annihilation or decay rates of DM into stable particles of the standard model. The…
Supersymmetric superheavy dark matter
V. Berezinsky, M. Kachelriess, M. Aa. Solberg
We propose the lightest supersymmetric particle (LSP) as a well-suited candidate for superheavy dark matter (SHDM). Various production mechanisms at the end of inflation can produc…