10 citations · 26 across the 7 of their papers we have counts for
7 papers
Fischler-Susskind holographic cosmology revisited
Pablo Diaz, M. A. Per, Antonio Segui
When Fischler and Susskind proposed a holographic prescription based on the Particle Horizon, they found that spatially closed cosmological models do not verify it due to the appar…
A fluid of black holes at the beginning of the Universe
P. Diaz, M. A. Per, A. Segui
The most entropic fluid can be related to a dense gas of black holes that we use to study the beginning of the universe. We encounter difficulties to compatibilize an adiabatic exp…
The initial conditions of the Universe and holography
P. Diaz, M. A. Per, A. Segui
We address the initial conditions for an expanding cosmology using the holographic principle. For the case of a closed model, the old prescription of Fishler and Susskind, that use…
Holographic Cosmology and Uncertainty Relation
M. A. Per, A. Segui
It is believed that a primary principle of the theory of quantum gravity is the Holographic Principle according to which a physical system can be described only by degrees of freed…
Problems and cures (partial) for holographic cosmology
M. A. Per, A. Segui
We analyze the validity of the generalized covariant entropy bound near the apparent horizon of isotropic expanding cosmological models. We encounter violations of the bound for co…
Encoding the scaling of the cosmological variables with the Euler Beta function
M. A. Per, A. J. Segui
We study the scaling exponents for the expanding isotropic flat cosmological models. The dimension of space, the equation of state of the cosmic fluid and the scaling exponent for…