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5 papers · 2 filters
Signs of Interacting Vacuum and Dark Matter in the Universe
Joan Sola, A. Gomez-Valent, J. de Cruz Perez
We consider the impact of dynamical dark energy (DDE) in the possible solution of the existing tensions in the CDM. We test both interacting and non-interacting DE models with d…
Consistency of local and astrophysical tests of the stability of fundamental constants
C. J. A. P. Martins, M. Vila Miñana
Tests of the stability of nature's fundamental constants are one of the cornerstones of the ongoing search for the new physics which is required to explain the recent acceleration…
The local and distant Universe: stellar ages and
Raul Jimenez, Andrea Cimatti, Licia Verde +2
The ages of the oldest stellar objects in our galaxy provide an independent test of the current cosmological model as they give a lower limit to the age of the Universe. Recent acc…
Measuring the Homogeneity of the Universe Using Polarization Drift
Raul Jimenez, Roy Maartens, Ali Rida Khalifeh +3
We propose a method to probe the homogeneity of a general universe, without assuming symmetry. We show that isotropy can be tested at remote locations on the past lightcone by comp…
How to relax the cosmological neutrino mass bound
Isabel M. Oldengott, Gabriela Barenboim, Sarah Kahlen +2
We study the impact of non-standard momentum distributions of cosmic neutrinos on the anisotropy spectrum of the cosmic microwave background and the matter power spectrum of the la…