11 citations · 26 across the 8 of their papers we have counts for
4 papers · 1 filter
Generalized Unimodular Gravity and Cosmological Perturbations
Júlio C. Fabris, Alexander Yu. Kamenshchik
The generalized unimodular theory is revisited and its consequence for cosmology is discussed. The usual matter components of the universe are obtained in a pure geometric way. Thi…
On gravitational collapse and integrable singularities
Roberto Casadio, Andrea Giusti, Alexander Kamenshchik +1
Schwarzschild black holes are expected to emerge as the end states of the classical gravitational collapse from non-singular configurations. After integrable curvature singularitie…
Cosmological Singularities and Quantum Particles
Samuel W. P. Oliveira, Alexander Yu. Kamenshchik
We study if there is an opportunity to describe quantum particles in the vicinity of three types of cosmological singularities, big bang-big crunch, big rip and big brake. Writing…
On Schwarzschild black hole singularity formation
Jorge Ovalle, Roberto Casadio, Alexander Kamenshchik
We examine whether the Schwarzschild black hole can emerge as the continuous end state of gravitational collapse from a non-singular configuration. Employing a time dependent exten…