454 citations · 5.4k across the 78 of their papers we have counts for
13 papers · 1 filter
Entropic gravity from noncommutative black holes
Rafael C. Nunes, Hooman Moradpour, Edésio M. Barboza +2
In this paper we will investigate the effects of a noncommutative (NC) space-time on the dynamics of the universe. We will generalize the black hole entropy formula for a NC black…
New observational constraints on gravity from cosmic chronometers
Rafael C. Nunes, Supriya Pan, Emmanuel N. Saridakis +1
We use the recently released cosmic chronometer data and the latest measured value of the local Hubble parameter, combined with the latest joint light curves of Supernovae Type Ia,…
Gravitational Baryogenesis in Running Vacuum models
V. K. Oikonomou, Supriya Pan, Rafael C. Nunes
We study the gravitational baryogenesis mechanism for generating baryon asymmetry in the context of running vacuum models. Regardless if these models can produce a viable cosmologi…
Probing the interaction between dark matter and dark energy in the presence of massive neutrinos
Suresh Kumar, Rafael C. Nunes
We consider the possibility of an interaction in the dark sector in the presence of massive neutrinos, and study the observational constraints on three different scenarios of massi…
Observational Constraints on gravity from varying fundamental constants
Rafael C. Nunes, Alexander Bonilla, Supriya Pan +1
We use observations related to the variation of fundamental constants, in order to impose constraints on the viable and most used gravity models. In particular, for the fine…
Gravitationally induced particle production and its impact on structure formation
Rafael C. Nunes
In this paper we investigate the influence of a continuous particles creation processes on the linear and nonlinear matter clustering, and its consequences on the weak lensing effe…
New observational constraints on f(T) gravity from cosmic chronometers
Rafael C. Nunes, Supriya Pan, Emmanuel N. Saridakis
We use the local value of the Hubble constant recently measured with 2.4% precision, as well as the latest compilation of cosmic chronometers data, together with standard probes su…
Running vacuum in the Universe and the time variation of the fundamental constants of Nature
Harald Fritzsch, Joan Sola, Rafael C. Nunes
We compute the time variation of the fundamental constants (such as the ratio of the proton mass to the electron mass, the strong coupling constant, the fine structure constant and…
New constraints on interacting dark energy from cosmic chronometers
Rafael C. Nunes, Supriya Pan, Emmanuel N. Saridakis
We use the latest compilation of observational Hubble parameter measurements estimated with the differential evolution of cosmic chronometers, in combination with the local value o…
Connecting inflation with late cosmic acceleration by particle production
Rafael C. Nunes
A continuous process of creation of particles is investigated as a possible connection between the inflationary stage with late cosmic acceleration. In this model, the inflationary…
Cosmological consequences of an adiabatic matter creation process
Rafael C. Nunes, Supriya Pan
In this paper we investigate the cosmological consequences of a continuous matter creation associated with the production of particles by the gravitational field acting on the quan…
A note on the relations between thermodynamics, energy definitions and Friedmann equations
H. Moradpour, Rafael C. Nunes, Everton M. C. Abreu +1
In what follows, we investigate the relation between the Friedmann and thermodynamic pressure equations, through solving the Friedmann and thermodynamic pressure equations simultan…
Jeans instability criterion from the viewpoint of non-gaussian statistics
Everton M. C. Abreu, Jorge Ananias Neto, Edesio M. Barboza +1
In this Letter we have derived the Jeans length in the context of the Kaniadakis statistics. We have compared this result with the Jeans length obtained in the non-extensive Tsalli…