367 citations · 1.9k across the 22 of their papers we have counts for
6 papers · 1 filter
Cosmological future singularities in interacting dark energy models
Jose Beltran Jimenez, Diego Rubiera-Garcia, Diego Saez-Gomez +1
The existence of interactions between dark matter and dark energy has been widely studied, since they can fit well the observational data and may provide new physics through such a…
Testing the concordance model in cosmology with model-independent methods: some issues
Diego Saez-Gomez
Since the number of dark energy models have rapidly increased over the last years, some model-independent methods have been developed in order to analyse the cosmological evolution…
Constraining gravity models using type Ia supernovae
Diego Saez-Gomez, C. Sofia Carvalho, Francisco S. N. Lobo +1
We present an analysis of an extension of the Teleparallel Equivalent of General Relativity, where denotes the torsion and the trace of the en…
Spotting deviations from R^2 inflation
Alvaro de la Cruz-Dombriz, Emilio Elizalde, Sergei D. Odintsov +1
We discuss the soundness of inflationary scenarios in theories beyond the Starobinsky model, namely a class of theories described by arbitrary functions of the Ricci scalar and the…
Observational constraints on cosmological future singularities
Jose Beltran Jimenez, Ruth Lazkoz, Diego Saez-Gomez +1
In this work we consider a family of cosmological models featuring future singularities. This type of cosmological evolution is typical of dark energy models with an equation of st…
Analyzing modified unimodular gravity via Lagrange multipliers
Diego Saez-Gomez
The so-called unimodular version of General Relativity is revisited. Unimodular gravity is constructed by fixing the determinant of the metric, what leads to the trace-free part of…