301 citations · 2.1k across the 77 of their papers we have counts for
4 papers · 1 filter
Scalar-tensor extension of the CDM model
W. C. Algoner, H. E. S. Velten, W. Zimdahl
We construct a cosmological scalar-tensor-theory model in which the Brans-Dicke type scalar enters the effective (Jordan-frame) Hubble rate as a simple modification of the Hubb…
Equilibrium and stability of relativistic stars in extended theories of gravity
Aneta Wojnar, Hermano Velten
We study static, spherically symmetric equilibrium configurations in extended theories of gravity (ETG) following the notation introduced by Capozziello et {\it al}. We calculate t…
Non-trivial static, spherically symmetric vacuum solution in a non-conservative theory of gravity
A. M. Oliveira, H. E. S. Velten, J. C. Fabris
We analyse the vacuum static spherically symmetric space-time for a specific class of non-conservative theories of gravity based on the Rastall's theory. We obtain a new vacuum sol…
A free parametrized TOV: Modified Gravity from Newtonian to Relativistic Stars
Hermano Velten, Adriano M. Oliveira, Aneta Wojnar
We test a free {\it ad hoc} parametrization of the Tolman-Oppenheimer-Volkoff (TOV) equation. We do not have in mind any specific extended theory of gravity (ETG) but each new para…