92 citations · 544 across the 25 of their papers we have counts for
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The Dyer-Roeder relation in a universe with particle production
M. de Campos, J. A. Souza
We have obtained analytical exact solutions of the Dyer-Roeder equation in a cosmological model where creation of particles occurs at the expenses of the gravitational field. We di…
Adiabatic decaying vacuum model for the universe
M. de Campos
We study a model that the entropy per particle in the universe is constant. The sources for the entropy are the particle creation and a lambda decaying term. We find exact solution…
Tensorial Perturbations in an Accelerating Universe
M. de Campos
We study tensorial perturbations (gravitational waves) in a universe with particle production (OSC). The background of gravitational waves produces a perturbation in the redshift o…
Perturbed Einstein field equations using Maple
M. de Campos
We obtain the perturbed components of affine connection and Ricci tensor using algebraic computation. Naturally, the perturbed Einstein field equations for the vacuum can be writte…