13 citations · 29 across the 8 of their papers we have counts for
Showing 2001Show all
3 papers · 1 filter
gr-qc2001
Quintessence with Coupled Scalar Fields
M. C. Bento, O. Bertolami, N. C. Santos
We discuss the dynamics of a quintessence model involving two coupled scalar fields. The model presents two types of solutions, namely solutions that correspond to eternal and tran…
astro-ph2001
Cosmological Bounds on an Invisibly Decaying Higgs Boson
O. Bertolami, M. C. Bento, R. Rosenfeld
We derive bounds on the Higgs boson coupling to a stable light scalar which is regarded as a collisional dark matter candidate. We study the behaviour of this scalar,…
astro-ph2001
Self-Interacting Scalar Dark Matter and Higgs Decay
M. C. Bento, O. Bertolami, R. Rosenfeld +1
Self-interacting dark matter has been suggested in order to overcome the difficulties of the Cold Dark Matter model on galactic scales. We argue that a scalar gauge singlet coupled…