Zobrazeno 1 - 10
of 58
pro vyhledávání: '"del Rio, Adrian"'
Autor:
Bustillo, Juan Calderón, del Rio, Adrian, Sanchis-Gual, Nicolas, Chandra, Koustav, Leong, Samson H. W.
Precessing black-hole mergers can produce gravitational waves with net circular polarization, understood as an imbalance between right- and left-handed amplitudes. According to the Cosmological Principle, such emission must average to zero across all
Externí odkaz:
http://arxiv.org/abs/2402.09861
Autor:
del Río, Adrián, Ester, Evelyn-Andreea
Publikováno v:
Phys. Rev. D 109, 105022 (2024)
We explore quantum corrections of electrically charged black holes subject to vacuum polarization effects of fermion fields in QED. Solving this problem exactly is challenging so we restrict to perturbative corrections that one can obtain using the h
Externí odkaz:
http://arxiv.org/abs/2401.08783
Autor:
del Río, Adrián, Agullo, Ivan
We study the non-conservation of the chiral charge of Dirac fields between past and future null infinity due to the Adler-Bell-Jackiw chiral anomaly. In previous investigations \cite{dR21}, we found that this charge fails to be conserved if electroma
Externí odkaz:
http://arxiv.org/abs/2308.06330
Autor:
Sanchis-Gual, Nicolas, del Rio, Adrian
Publikováno v:
Phys. Rev. D 108, 044052, 2023
We show that binary black hole mergers with precessing evolution can potentially excite photons from the quantum vacuum in such a way that total helicity is not preserved in the process. Helicity violation is allowed by quantum fluctuations that spoi
Externí odkaz:
http://arxiv.org/abs/2303.15534
Publikováno v:
Phys. Rev. D 107, 085023 (2023)
We explore static and spherically symmetric solutions of the 4-dimensional semiclassical Einstein's equations using the quantum vacuum polarization of a conformal field as a source. These solutions may be of interest for \black{the study of} exotic,
Externí odkaz:
http://arxiv.org/abs/2212.08089
Autor:
Ashtekar, Abhay, del Río, Adrián
Publikováno v:
Phys. Rev. D 106, 085003 (2022)
It was recently pointed out that linear quantum fields $\hat \phi(x)$ can be meaningfully propagated across the big bang (and the big crunch) singularities of spatially flat Friedmann, Lema\^itre, Robertson, Walker (FLRW) universes \cite{ADLS2021}. R
Externí odkaz:
http://arxiv.org/abs/2209.09922
Publikováno v:
Gen. Relativ.Grav. (2022) 54:45
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. We review the status of such space-like singularities from three increa
Externí odkaz:
http://arxiv.org/abs/2205.00298
Autor:
del Rio, Adrian
Publikováno v:
Phys. Rev. D 104, 065012 (2021)
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 gravitational background. Physical applications of this quantum effect have bee
Externí odkaz:
http://arxiv.org/abs/2106.08350
The observation of electromagnetic radiation emitted or absorbed by matter was instrumental in revealing the quantum properties of atoms and molecules in the early XX century, and constituted a turning-point in the development of the quantum theory.
Externí odkaz:
http://arxiv.org/abs/2105.11380
Publikováno v:
Phys. Rev. D 103, 105002 (2021)
The point-splitting renormalization method offers a prescription to calculate finite expectation values of quadratic operators constructed from quantum fields in a general curved spacetime. It has been recently shown by Levi and Ori that when the bac
Externí odkaz:
http://arxiv.org/abs/2103.17218