1.2k citations · 1.7k across the 29 of their papers we have counts for
29 papers
Spherical thin shells with charge in unimodular gravity
Gabriel R. Bengochea, Ernesto F. Eiroa, Griselda Figueroa-Aguirre
We construct spherically symmetric thin shells in unimodular gravity (UG) and analyze their dynamical stability under radial, symmetry-preserving perturbations. We use the UG junct…
Emergence of cosmic structure from Planckian discreteness
Gabriel R. Bengochea, Gabriel Leon, Alejandro Perez
In the standard inflationary paradigm the inhomogeneities observed in the CMB arise from quantum fluctuations of an initially homogeneous and isotropic vacuum state. This picture s…
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…
A clarification on prevailing misconceptions in unimodular gravity
Gabriel R. Bengochea, Gabriel Leon, Alejandro Perez +1
The traditional presentation of Unimodular Gravity (UG) consists on indicating that it is an alternative theory of gravity that restricts the generic diffeomorphism invariance of G…