30 citations · 51 across the 12 of their papers we have counts for
12 papers
Asymmetric excitation of left- vs right-handed photons in accelerating waveguides
Adrian del Rio
The electromagnetic duality symmetry of Maxwell's equations in vacuum implies that the circular polarization of classical electromagnetic waves is conserved. In quantum field t…
Singularity resolution in the backreacted Schwarzschild geometry from 2D matter with negative central charge
F. J. Marañón-González, A. del Río, J. Navarro-Salas
Two-dimensional dilaton gravity provides a valuable framework to study the dynamics of quantum black holes. These models are often coupled to conformal scalar fields, which capture…
A numerical approach to particle creation in accelerating toy models
Pedro Duarte Baptista, Alex Vañó-Viñuales, Adrían del Río
The formation of black holes by the gravitational collapse of stars is known to spontaneously excite particle pairs out of the quantum vacuum. For the canonical vacuum state at pas…
On the renormalization of ultraviolet divergences in the inflationary angular power spectrum
Adrian del Rio, Jose Navarro-Salas
We revise the role that ultraviolet divergences of quantum fields play in slow-roll inflation, and discuss the renormalization of cosmological observables from a space-time perspec…
Adiabatic regularization for spin fields and the renormalized stress-energy tensor
Adrian del Rio, Jose Navarro-Salas
In this article we briefly review the adiabatic renormalization program for spin 1/2 fields in expanding universes. We introduce the method and provide explicit expressions for the…
Electric-magnetic duality in the quantum theory
Adrian del Rio
It is known that an electric-magnetic duality transformation is a symmetry of the classical source-free Maxwell theory in generic spacetimes. This provides a conserved Noether char…
Singularity resolution in spherically reduced 2D semiclassical gravity with negative central charge
Adrián del Río, F. Javier Marañón-González, José Navarro-Salas
We analyze the semiclassical Schwarzschild geometry in the Boulware quantum state in the framework of two-dimensional (2D) dilaton gravity. The classical model is defined by the sp…
Probing cosmological singularities with quantum fields: Open and closed FLRW universes
Abhay Ashtekar, Adrián del Río
It was recently pointed out that linear quantum fields can be meaningfully propagated across the big bang (and the big crunch) singularities of spatially flat Friedmann…
Space-like Singularities of General Relativity: A Phantom menace?
Abhay Ashtekar, Adrián del Río, Marc Schneider
The big bang and the Schwarzschild singularities are space-like. They are generally regarded as the "final frontiers" at which space-time ends and general relativity breaks down. W…
Chiral anomalies induced by gravitational waves
Adrian del Rio
Chiral symmetries in field theory are typically affected by an anomaly in the quantum theory. This anomaly emerges when one introduces an interaction with a Yang-Mills or gravitati…
Note on the pragmatic mode-sum regularization method: translational-splitting in a cosmological background
Pau Beltrán-Palau, Adrián del Río, Sergi Nadal-Gisbert +1
The point-splitting renormalization method offers a prescription to calculate finite expectation values of quadratic operators constructed from quantum fields in a general curved s…
Distinguishing black holes from horizonless objects through the excitation of resonances during inspiral
Vitor Cardoso, Adrian del Rio, Masashi Kimura
How well is the vacuum Kerr geometry a good description of the dark, compact objects in our universe? Precision measurements of accreting matter in the deep infrared and gravitatio…