264 citations · 713 across the 16 of their papers we have counts for
16 papers
Hidden sector effects on double higgs production near threshold at the LHC
A. C. A. Oliveira, R. Rosenfeld
In this letter we study a novel effect of a hidden sector coupling to the standard model Higgs boson: an enhancement of the Higgs pair production cross section near threshold due t…
Beyond Spherical Top Hat Collapse
T. S. Pereira, R. Rosenfeld, A. Sanoja
We study the evolution of inhomogeneous spherical perturbations in the universe in a way that generalizes the spherical top hat collapse in a straightforward manner. For that purpo…
Spherical Collapse in Chameleon Models
Ph. Brax, R. Rosenfeld, D. A. Steer
We study the gravitational collapse of an overdensity of nonrelativistic matter under the action of gravity and a chameleon scalar field. We show that the spherical collapse model…
Physical approximations for the nonlinear evolution of perturbations in dark energy scenarios
L. R. Abramo, R. C. Batista, L. Liberato +1
The abundance and distribution of collapsed objects such as galaxy clusters will become an important tool to investigate the nature of dark energy and dark matter. Number counts of…
Dynamical Mutation of Dark Energy
L. R. Abramo, R. C. Batista, L. Liberato +1
We discuss the intriguing possibility that dark energy may change its equation of state in situations where large dark energy fluctuations are present. We show indications of this…
Structure formation in the presence of dark energy perturbations
L. R. Abramo, R. C. Batista, L. Liberato +1
We study non-linear structure formation in the presence of dark energy. The influence of dark energy on the growth of large-scale cosmological structures is exerted both through it…