135 citations · 302 across the 5 of their papers we have counts for
5 papers
Perturbations in electromagnetic dark energy
Jose Beltran Jimenez, Tomi S. Koivisto, Antonio L. Maroto +1
It has been recently proposed that the presence of a temporal electromagnetic field on cosmological scales could explain the phase of accelerated expansion that the universe is cur…
Cosmological evolution in vector-tensor theories of gravity
Jose Beltran Jimenez, Antonio L. Maroto
We present a detailed study of the cosmological evolution in general vector-tensor theories of gravity without potential terms. We consider the evolution of the vector field throug…
Vector models for dark energy
Jose Beltran Jimenez, Antonio L. Maroto
We explore the possibility that the present stage of accelerated expansion of the universe is due to the presence of a cosmic vector field. We show that vector theories allow for t…
A cosmic vector for dark energy
Jose Beltran Jimenez, Antonio L. Maroto
In this work we show that the presence of a vector field on cosmological scales could explain the present phase of accelerated expansion of the universe. The proposed theory contai…
Cosmology with moving dark energy and the CMB quadrupole
Jose Beltran Jimenez, Antonio L. Maroto
We study the consequences of a homogeneous dark energy fluid having a non-vanishing velocity with respect to the matter and radiation large-scale rest frames. We consider homogeneo…