133 citations · 500 across the 17 of their papers we have counts for
5 papers · 1 filter
Cosmological Constraints on (t)CDM Models
H. A. P. Macedo, L. S. Brito, J. F. Jesus +1
Problems with the concordance cosmology CDM as the cosmological constant problem, coincidence problems and Hubble tension has led to many proposed alternatives, as the CDM…
Primordial Gravitational Waves in Running Vacuum Cosmologies
D. A. Tamayo, J. A. S. Lima, M. E. S. Alves +1
We investigate the cosmological production of gravitational waves in a nonsingular flat cosmology powered by a "running vacuum" energy density described by , a phe…
Dynamics and Constraints of the Massive Gravitons Dark Matter Flat Cosmologies
S. Basilakos, M. Plionis, M. E. S. Alves +1
We discuss the dynamics of the universe within the framework of Massive Graviton Dark Matter scenario (MGCDM) in which gravitons are geometrically treated as massive particles. In…
Observational Constraints on Visser's Cosmological Model
Marcio E. S. Alves, Fabio C. Carvalho, Jose C. N. de Araujo +3
Theories of gravity for which gravitons can be treated as massive particles have presently been studied as realistic modifications of General Relativity, and can be tested with cos…
Can Massive Gravitons be an Alternative to Dark Energy?
Marcio E. S. Alves, Oswaldo D. Miranda, Jose C. N. de Araujo
In this work, we explore some cosmological implications of the model proposed by M. Visser in 1998. In his approach, Visser intends to take in account mass for the graviton by mean…