378 citations
- Instituto Superior TécnicoPT53 papers
- University of LisbonPT18 papers
- Universidade LusófonaPT4 papers
- Centre National de la Recherche ScientifiqueFR3 papers
- GéoazurFR2 papers
- Imperial College LondonGB2 papers
- Instituto de Física CorpuscularES2 papers
- Jet Propulsion LaboratoryUS2 papers
- Laboratoire Kastler BrosselFR2 papers
- Max Planck Institute for Polymer ResearchDE2 papers
- Observatoire de la Côte d’AzurFR2 papers
- Observatoire de ParisFR2 papers
11 papers · 1 filter
Is S4 the horizontal symmetry of tri-bimaximal lepton mixing?
W. Grimus, L. Lavoura, P. O. Ludl
We determine the symmetry groups under which the charged-lepton and the Majorana-neutrino mass terms are invariant. We note that those two groups always exist trivially, i.e. indep…
Resonant leptogenesis and tribimaximal leptonic mixing with A4 symmetry
G. C. Branco, R. Gonzalez Felipe, M. N. Rebelo +1
We investigate the viability of thermal leptogenesis in type-I seesaw models with leptonic flavour symmetries that lead to tribimaximal neutrino mixing. We consider an effective th…
Astrophysical constraints on unparticle-inspired models of gravity
O. Bertolami, J. Paramos, P. Santos
We use stellar dynamics arguments to constrain the relevant parameters of ungravity inspired models. We show that resulting bounds do constrain the parameters of the theory of unpa…
Coupling dark energy with Standard Model states
M. C. Bento, A. E. Bernardini, O. Bertolami
In this contribution one examines the coupling of dark energy to the gauge fields, to neutrinos, and to the Higgs field. In the first case, one shows how a putative evolution of th…
Bounds on scalar masses in two Higgs doublet models
P. M. Ferreira, D. R. T. Jones
A thorough analysis of stability and perturbativity bounds is performed in several versions of the two-Higgs doublet model, for both CP-conserving and spontaneously broken CP minim…
Bifurcation of Plasma Balls and Black Holes to Lobed Configurations
Vitor Cardoso, Oscar J. C. Dias
At high energy densities any quantum field theory is expected to have an effective hydrodynamic description. When combined with the gravity/gauge duality an unified picture emerges…