962 citations · 3.1k across the 43 of their papers we have counts for
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Electromagnetic nature of dark energy
Jose Beltran Jimenez, Antonio L. Maroto
Out of the four components of the electromagnetic field, Maxwell's theory only contains two physical degrees of freedom. However, in an expanding universe, consistently eliminating…
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…
Dark energy: the absolute electric potential of the universe
Jose Beltran Jimenez, Antonio L. Maroto
Is there an absolute cosmic electric potential?. The recent discovery of the accelerated expansion of the universe could be indicating that this is certainly the case. In this essa…
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…
Cosmic vector for dark energy: constraints from SN, CMB and BAO
Jose Beltran Jimenez, Ruth Lazkoz, Antonio L. Maroto
It has been recently shown that the presence of a vector field over cosmological scales could explain the observed accelerated expansion of the universe without introducing neither…
The electromagnetic dark sector
Jose Beltran Jimenez, Antonio L. Maroto
We consider electromagnetic field quantization in an expanding universe. We find that the covariant (Gupta-Bleuler) method exhibits certain difficulties when trying to impose the q…