12 citations · 26 across the 6 of their papers we have counts for
6 papers
Master variables and Darboux symmetry for axial perturbations of the exterior and interior of black hole spacetimes
Michele Lenzi, Guillermo A. Mena Marugán, Andrés Mínguez-Sánchez +1
Recent efforts have shown that Kantowski-Sachs spacetime provides a useful framework for analyzing perturbations inside a Schwarzschild black hole (BH). In these studies, the adopt…
Expansion-sensitive coupling of a local quantum system in de Sitter cosmology
Jorma Louko, Guillermo A. Mena Marugán, Alvaro Torres-Caballeros
When a local quantum system couples to a quantum field in a cosmological spacetime, the time dependence of the coupling strength is conventionally taken to reflect the design of th…
A Brief Overview of Results about Uniqueness of the Quantization in Cosmology
Jerónimo Cortez, Guillermo A. Mena Marugán, José M. Velhinho
The purpose of this review is to provide a brief overview of some recent conceptual developments about possible criteria to guarantee the uniqueness of the quantization in a variet…
Quantum linear scalar fields with time dependent potentials: Overview and applications to cosmology
Jerónimo Cortez, Guillermo A. Mena Marugán, José Velhinho
In this work, we present an overview of uniqueness results derived in recent years for the quantization of Gowdy cosmological models and for (test) Klein-Gordon fields minimally co…
Asymptotics of Regulated Field Commutators for Einstein-Rosen Waves
J. Fernando Barbero G., Guillermo A. Mena Marugán, Eduardo J. S. Villaseñor
We discuss the asymptotic behavior of regulated field commutators for linearly polarized, cylindrically symmetric gravitational waves and the mathematical techniques needed for thi…
Extent of the Immirzi Ambiguity in Quantum General Relativity
Guillermo A. Mena Marugan
The Ashtekar-Barbero formulation of general relativity admits a one-parameter family of canonical transformations that preserves the expressions of the Gauss and diffeomorphism con…