401 citations · 1.6k across the 64 of their papers we have counts for
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Cosmological constraints on superconducting dark energy models
Zoltán Keresztes, László Á. Gergely, Tiberiu Harko +1
We consider cosmological tests of a scalar-vector-tensor gravitational model, in which the dark energy is included in the total action through a gauge invariant, electromagnetic ty…
Gravitational, shear and matter waves in Kantowski-Sachs cosmologies
Zoltán Keresztes, Mats Forsberg, Michael Bradley +2
A general treatment of vorticity-free, perfect fluid perturbations of Kantowski-Sachs models with a positive cosmological constant are considered within the framework of the 1+1+2…
Criticality and Big Brake singularities in the tachyonic evolutions of closed Friedmann universes with cold dark matter
Zsolt Horváth, Zoltán Keresztes, Alexander Yu. Kamenshchik +1
The evolution of a closed Friedmann universe filled by a tachyon scalar field with a trigonometric potential and cold dark matter (CDM) is investigated. A subset of the evolutions…