401 citations · 2.3k across the 45 of their papers we have counts for
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Cosmology of the de Sitter Horndeski models
Nelson J. Nunes, Prado Martin-Moruno, Francisco S. N. Lobo
Horndeski models with a de Sitter critical point for any kind of material content may provide a mechanism to alleviate the cosmological constant problem. We study the cosmological…
Semi-classical and nonlinear energy conditions
Prado Martin-Moruno, Matt Visser
We consider the characteristics of nonlinear energy conditions and of quantum extensions of these and the usual energy conditions. We show that they are satisfied by some quantum v…
The quantum realm of the "Little Sibling" of the Big Rip singularity
Imanol Albarran, Mariam Bouhmadi-López, Francisco Cabral +1
We analyse the quantum behaviour of the "Little Sibling" of the Big Rip singularity (LSBR) [1]. The quantisation is carried within the geometrodynamical approach given by the Wheel…
Accelerating Horndeski cosmologies screening the vacuum energy
Prado Martin-Moruno, Nelson J. Nunes, Francisco S. N. Lobo
In the context of Horndeski cosmologies, we consider a dynamical adjustment mechanism able to screen any value of the vacuum energy of the matter fields leading to a fixed de Sitte…
Attracted to de Sitter II: cosmology of the shift-symmetric Horndeski models
Prado Martin-Moruno, Nelson J. Nunes
Horndeski models with a de Sitter critical point for any kind of material content may provide a mechanism to alleviate the cosmological constant problem. Moreover, they could allow…
Accelerating universe as a result of an adjustment mechanism
Prado Martin-Moruno, Nelson J. Nunes
In this essay we propose that the theory of gravity's vacuum is described by a de Sitter geometry. Under this assumption we consider an adjustment mechanism able to screen any valu…