95 citations · 625 across the 35 of their papers we have counts for
3 papers · 1 filter
Uniqueness of Petrov type D spatially inhomogeneous irrotational silent models
Pantelis S Apostolopoulos, Jaume Carot
The consistency of the constraint with the evolution equations for spatially inhomogeneous and irrotational silent (SIIS) models of Petrov type I, demands that the former are prese…
Late acceleration and crossing in induced gravity
Pantelis S. Apostolopoulos, Nikolaos Tetradis
We study the cosmological evolution on a brane with induced gravity within a bulk with arbitrary matter content. We consider a Friedmann-Robertson-Walker brane, invariantly charact…
Cosmological Acceleration and Gravitational Collapse
Pantelis S. Apostolopoulos, Nikolaos Brouzakis, Nikolaos Tetradis +1
The acceleration parameter defined through the local volume expansion is negative for a pressureless, irrotational fluid with positive energy density. In the presence of inhomogene…