307 citations · 2.7k across the 59 of their papers we have counts for
8 papers · 1 filter
Cosmology from an exponential dependence on the trace of the energy-momentum tensor -- Numerical approach and cosmological tests
G. Ribeiro, R. Sfair, P. H. R. S. Moraes +2
In this paper, we present the cosmological scenario obtained from gravity by using an exponential dependence on the trace of the energy-momentum tensor. With a numerical a…
Gravastar model in Randall-Sundrum braneworld
José D V Arbañil, Pedro H R S Moraes, Manuel Malheiro
In this work we derive a gravastar model in Randall-Sundrum II braneworld scenario. Gravastars (or gravitationally vacuum stars) were proposed by Mazur and Mottola as systems of gr…
A unique equation of state for the universe evolution from AdS space-time
M. M. Lapola, P. H. R. S. Moraes, W. de Paula +3
We apply the Induced Matter Model to a five-dimensional metric. For the case with null cosmological constant, we obtain a solution able to describe the radiation-dominated era of t…
The trace of the trace of the energy-momentum tensor-dependent Einstein's field equations
P. H. R. S. Moraes
The gravity field equations depend generically on both the Ricci scalar and trace of the energy-momentum tensor . Within the assumption of perfect fluids, the theor…
Kinematic Constraints on Spatial Curvature from Supernovae Ia and Cosmic Chronometers
J. F. Jesus, R. Valentim, P. H. R. S. Moraes +1
An approach to estimate the spatial curvature from data independently of dynamical models is suggested, through kinematic parameterizations of the comoving distance ($D_{C}(z…
Viability of the cosmology
P. H. R. S. Moraes, P. K. Sahoo, S. K. J. Pacif
We propose a new theoretical approach for a cosmological model, which starts from an exponential of the trace of the energy-momentum tensor-dependence on the gravitational action,…