Zobrazeno 1 - 10
of 88
pro vyhledávání: '"Platania, Alessia"'
Autor:
Afshordi, Niayesh, Ashtekar, Abhay, Barausse, Enrico, Berti, Emanuele, Brito, Richard, Buoninfante, Luca, Carballo-Rubio, Raúl, Cardoso, Vitor, Carullo, Gregorio, Dafermos, Mihalis, De Laurentis, Mariafelicia, del Rio, Adrian, Di Filippo, Francesco, Eichhorn, Astrid, Emparan, Roberto, Gregory, Ruth, Herdeiro, Carlos A. R., Kunz, Jutta, Lehner, Luis, Liberati, Stefano, Mathur, Samir D., Nissanke, Samaya, Pani, Paolo, Platania, Alessia, Pretorius, Frans, Sasaki, Misao, Tiede, Paul, Unruh, William, Visser, Matt, Wald, Robert M.
The gravitational physics landscape is evolving rapidly, driven by our ability to study strong-field regions, in particular black holes. Black Holes Inside and Out gathered world experts to discuss the status of the field and prospects ahead. We hope
Externí odkaz:
http://arxiv.org/abs/2410.14414
Autor:
Knorr, Benjamin, Platania, Alessia
We compute the asymptotic safety landscape stemming from ultraviolet-complete photon-graviton flows in a field theoretic setup, and we confront it with the weak gravity conjecture and, for the first time, with positivity bounds. At fourth order in de
Externí odkaz:
http://arxiv.org/abs/2405.08860
Local higher-derivative corrections to the Einstein-Hilbert action yield sub-leading corrections to the Bekenstein-Hawking area law. Here we show that if the quantum effective action comprises a certain class of infrared non-localities, the entropy o
Externí odkaz:
http://arxiv.org/abs/2303.17621
Autor:
Platania, Alessia
In this chapter we review the state-of-the-art of black holes in asymptotically safe gravity. After a brief recap of the asymptotic safety program, we shall summarize the features of asymptotic-safety-inspired black-hole models that have been constru
Externí odkaz:
http://arxiv.org/abs/2302.04272
We propose a new method to account for quantum-gravitational effects in cosmological and black hole spacetimes. At the core of our construction is the "decoupling mechanism": when a physical infrared scale overcomes the effect of the regulator implem
Externí odkaz:
http://arxiv.org/abs/2210.01138
Path integrals and the Wilsonian renormalization group provide two complementary computational tools for investigating continuum approaches to quantum gravity. The starting points of these constructions utilize a bare action and a fixed point of the
Externí odkaz:
http://arxiv.org/abs/2206.10626
Autor:
Platania, Alessia
Resumming quantum fluctuations at the level of the gravitational path integral is expected to result in non-local effective actions and thus in a non-trivial momentum dependence of the propagator. Which properties the (dressed) graviton propagator ha
Externí odkaz:
http://arxiv.org/abs/2206.04072
We discuss some aspects of the metric configuration space in quantum gravity in the background field formalism. We give a necessary and sufficient condition for the parameterization of Euclidean metric fluctuations such that i) the signature of the m
Externí odkaz:
http://arxiv.org/abs/2205.13558
Autor:
Knorr, Benjamin, Platania, Alessia
Publikováno v:
PRD 106 (2022) 2, L021901
We tackle the question of whether regular black holes or other alternatives to the Schwarzschild solution can arise from an action principle in quantum gravity. Focusing on an asymptotic expansion of such solutions and inspecting the corresponding fi
Externí odkaz:
http://arxiv.org/abs/2202.01216