49 citations · 138 across the 9 of their papers we have counts for
4 papers · 1 filter
Tachyacoustic Cosmology: An Alternative to Inflation
Dennis Bessada, William H. Kinney, Dejan Stojkovic +1
We consider an alternative to inflation for the generation of superhorizon perturbations in the universe in which the speed of sound is faster than the speed of light. We label suc…
CMB anisotropies induced by tensor modes in Massive Gravity
Dennis Bessada, Oswaldo D. Miranda
We study Gravitational Waves (GWs) in the context of Massive Gravity, an extension to General Relativity (GR) where the fluctuations of the metric have a nonzero mass, and specific…
Inflationary potentials in DBI models
Dennis Bessada, William H. Kinney, Konstantinos Tzirakis
We study DBI inflation based upon a general model characterized by a power-law flow parameter and speed of sound , where and are constant…
CMB Polarization and Theories of Gravitation with Massive Gravitons
Dennis Bessada, Oswaldo D. Miranda
We study in this paper three different theories of gravitation with massive gravitons - the modified Fierz-Pauli (FP) model, Massive Gravity and the bimetric theory proposed by Vis…