4 papers
A numerical approach to particle creation in accelerating toy models
Pedro Duarte Baptista, Alex Vañó-Viñuales, AdrÃan del RÃo
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…
Singularity resolution in the backreacted Schwarzschild geometry from 2D matter with negative central charge
F. J. Marañón-González, A. del RÃo, 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…
Singularity resolution in spherically reduced 2D semiclassical gravity with negative central charge
Adrián del RÃo, 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…
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…