296 citations · 6.5k across the 170 of their papers we have counts for
43 papers · 1 filter
Latest supernovae constraints on f(R) cosmologies
J. Santos, J. S. Alcaniz, F. C. Carvalho +1
A class of modified gravity, known as -gravity, has presently been applied to Cosmology as a realistic alternative to dark energy. In this paper we use the most recent Type-I…
New coupled quintessence cosmology
J. F. Jesus, R. C. Santos, J. S. Alcaniz +1
A component of dark energy has been recently proposed to explain the current acceleration of the Universe. Unless some unknown symmetry in Nature prevents or suppresses it, such a…
A parametric model for dark energy
E. M. Barboza, J. S. Alcaniz
Determining the mechanism behind the current cosmic acceleration constitutes a major question nowadays in theoretical physics. If the dark energy route is taken, this problem may p…
Cosmological Constraints from Hubble Parameter on f(R) Cosmologies
F. C. Carvalho, E. M. Santos, J. S. Alcaniz +1
Modified gravity in the Palatini approach has been presently applied to Cosmology as a realistic alternative to dark energy. In this concern, a number of authors have search…
Testing power-law cosmology with galaxy clusters
Zong-Hong Zhu, Ming Hu, J. S. Alcaniz +1
Power-law cosmologies, in which the cosmological scale factor evolves as a power law in the age, with $α\ga 1$, regardless of the matter content or cosmological epo…
Observational constraints on late-time Lambda(t) cosmology
S. Carneiro, M. A. Dantas, C. Pigozzo +1
The cosmological constant, i.e., the energy density stored in the true vacuum state of all existing fields in the Universe, is the simplest and the most natural possibility to desc…