401 citations · 2.3k across the 45 of their papers we have counts for
6 papers · 1 filter
Hawking-Ellis type III spacetime geometry
Prado Martin-Moruno, Matt Visser
The type III (and the "essential core" type III) stress-energy tensors in the Hawking-Ellis (Segre-Plebanski) classification stand out in that there is to date no known source…
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…
Monologue of a graviton in identity crisis. Or on Alternative Theories of Gravity. (In Spanish)
Prado Martin-Moruno
The era of high precision Cosmology has shown our ignorance about the composition of the Universe. In this context, there has been a renewed interest on Alternative Theories of Gra…
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…
quantum cosmology: avoiding the Big Rip
Ana Alonso-Serrano, Mariam Bouhmadi-Lopez, Prado Martin-Moruno
Extended theories of gravity have gathered a lot of attention over the last years, for they not only provide an excellent framework to describe the inflationary era but also yields…
Essential core of the Hawking--Ellis types
Prado Martin-Moruno, Matt Visser
The Hawking-Ellis (Segre-Plebanski) classification of possible stress-energy tensors is an essential tool in analyzing the implications of the Einstein field equations in a more-or…