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Charged thin shells in unimodular gravity
Gabriel R. Bengochea, Ernesto F. Eiroa, Griselda Figueroa-Aguirre
In this article, we construct a broad family of spacetimes with spherically symmetric thin shells in unimodular gravity. We present the framework for the analysis of the dynamical…
Primordial power spectrum from an objective collapse mechanism: The simplest case
Martin Miguel Ocampo, Octavio Palermo, Gabriel León +1
In this work we analyzed the physical origin of the primordial inhomogeneities during the inflation era. The proposed framework is based, on the one hand, on semiclassical gravity,…
Is Planckian discreteness observable in cosmology?
Gabriel R. Bengochea, Gabriel Leon, Alejandro Perez
A Planck scale inflationary era -- in a quantum gravity theory predicting discreteness of quantum geometry at the fundamental scale -- produces the scale invariant spectrum of inho…