174 citations · 185 across the 7 of their papers we have counts for
7 papers · 1 filter
Coherent states in quantum cosmology
S. Robles-Perez, Y. Hassouni, P. F. Gonzalez-Diaz
In the realm of a quantum cosmological model for dark energy in which we have been able to construct a well-defined Hilbert space, a consistent coherent state representation has be…
Worse than a big rip?
Mariam Bouhmadi-Lopez, Pedro F. Gonzalez-Diaz, Prado Martin-Moruno
We show that a generalised phantom Chaplygin gas can present a future singularity in a finite future cosmic time. Unlike the big rip singularity, this singularity happens for a fin…
Can black holes exist in an accelerating universe?
Pedro F. Gonzalez-Diaz
This letter deals with an analysis of the space-time static metric that corresponds to a quintessential state equation with constant characteristic parameter. Following a procedure…
Quantum black-hole kinks
Pedro F. Gonzalez-Diaz
By allowing the light cones to tip over on hypersurfaces according to the conservation laws of an one-kink in static, Schwarzschild and five-dimensional black hole metrics, we show…
Wormholes and Cosmic Strings
Pedro F. Gonzalez-Diaz
A gravitational scenario is proposed where the euclidean action is invariant under the isotropic and homogeneous version of the euclidean {\it U(1)} group of local transformations…
Complementary Relativity
P. F. Gonzalez-Diaz
Special theory of relativity has been formulated in a vacuum momentum-energy representation which is equivalent to Einstein special relativity and predicts just the same results as…