5 papers
A microphysically inspired approach to dark matter-dark energy interactions: first bounds on dark-sector scattering cross sections
A. A. Escobal, F. B. Abdalla, J. F. Jesus +4
The observational tension regarding the value of the Hubble constant () has motivated the exploration of alternative cosmological scenarios, including Interacting Dark Energy…
Cosmic adiabatic photon creation: Temperature law and blackbody spectrum
J. A. S. Lima, S. R. G. Trevisani, R. C. Santos
The temperature-redshift relation (cosmic thermometer) is rediscussed in the framework of gravitationally induced photon production in the expanding universe. It is found that the…
Linear Growth of Matter Perturbations Probed by Redshift-Space Distortions in Interacting CDM Cosmologies
A. A. Escobal, H. A. P. Macedo, J. F. Jesus +2
In the context of a spatially flat CDM cosmology, we investigate interacting dark energy (IDE) scenarios characterized by phenomenological interaction terms proportional to…
Interacting dark sector with quadratic coupling: theoretical and observational viability
Jaelsson S. Lima, Rodrigo von Marttens, Luciano Casarini
Models proposing a non-gravitational interaction between dark energy (DE) and dark matter (CDM) have been extensively studied as alternatives to the standard cosmological model. A…
New accelerating cosmology without dark energy: The particle creation approach and the reduced relativistic gas
P. W. R. Lima, J. A. S. Lima, J. F. Jesus
The standard procedure to explain the accelerated expansion of the Universe is to assume the existence of an exotic component with negative pressure, generically called dark energy…