540 citations · 6.4k across the 303 of their papers we have counts for
23 papers · 1 filter
(Compactified) black branes in four dimensional f(R)-gravity
N. Dimakis, Alex Giacomini, Andronikos Paliathanasis
A new family of analytical solutions in a four dimensional static spacetime is presented for -gravity. In contrast to General Relativity, we find that a non triv…
Approximate Noether Symmetries and Collineations for Regular Perturbative Lagrangians
Andronikos Paliathanasis, Sameerah Jamal
Regular perturbative Lagrangians that admit approximate Noether symmetries and approximate conservation laws are studied. Specifically, we investigate the connection between approx…
Duality transformation and conformal equivalent scalar-tensor theories
Gabriele Gionti, S. J., Andronikos Paliathanasis
We deal with the duality symmetry of the Dilaton field in cosmology and specifically with the so-called Gasperini-Veneziano duality transformation. In particular, we determine two…
Dust fluid component from Lie symmetries in Scalar field Cosmology
Andronikos Paliathanasis
We show that in scalar-field cosmology, a dust fluid follows as quantum corrections from solutions of the Wheeler-DeWitt equation generated by Lie symmetries. The energy density of…
Lie symmetries for systems of evolution equations
Andronikos Paliathanasis, Michael Tsamparlis
The Lie symmetries for a class of systems of evolution equations are studied. The evolution equations are defined in a bimetric space with two Riemannian metrics corresponding to t…
Finsler-Randers Cosmology: dynamical analysis and growth of matter perturbations
G. Papagiannopoulos, S. Basilakos, A. Paliathanasis +2
We study for the first time the dynamical properties and the growth index of linear matter perturbations of the Finsler-Randers (FR) cosmological model, for which we consider that…