385 citations · 2.4k across the 73 of their papers we have counts for
6 papers · 1 filter
Dark photon searches with atomic transitions
C. Álvarez-Luna, J. A. R. Cembranos
Dark matter could be made up of dark photons, massive but very light particles whose interactions with matter resemble those of usual photons but suppressed by a small mixing param…
Fundamental Physics with the Square Kilometre Array
A. Weltman, P. Bull, S. Camera +50
The Square Kilometre Array (SKA) is a planned large radio interferometer designed to operate over a wide range of frequencies, and with an order of magnitude greater sensitivity an…
Graviton-photon oscillation in alternative theories of gravity
Jose A. R. Cembranos, Mario Coma Diaz, Prado Martin-Moruno
In this paper we investigate graviton-photon oscillation in the presence of an external magnetic field in alternative theories of gravity. Whereas the effect of an effective refrac…
Modified gravity as a diagravitational medium
Jose A. R. Cembranos, Mario Coma Diaz, Prado Martin-Moruno
In this letter we reflect on the propagation of gravitational waves in alternative theories of gravity, which are typically formulated using extra gravitational degrees of freedom…
Fermion dynamics in torsion theories
J. A. R. Cembranos, J. Gigante Valcarcel, F. J. Maldonado Torralba
In this work we have studied the non-geodesical behaviour of particles with spin 1/2 in Poincaré gauge theories of gravity, via the WKB method and the Mathisson-Papapetrou equation…
On scalar and vector fields coupled to the energy-momentum tensor
Jose Beltran Jimenez, Jose A. R. Cembranos, Jose M. Sanchez Velazquez
We consider theories for scalar and vector fields coupled to the energy-momentum tensor. Since these fields also carry a non-trivial energy-momentum tensor, the coupling prescripti…