Zobrazeno 1 - 10
of 446
pro vyhledávání: '"Giacchini A"'
Publikováno v:
Phys. Rev. D 110, 084032(2024)
In this paper, we undertake a comprehensive examination of quasinormal modes linked to Lee-Wick black holes, delving into scalar, electromagnetic, and gravitational perturbations using the spectral method. Such black holes can display a rich structur
Externí odkaz:
http://arxiv.org/abs/2410.13245
Publikováno v:
International Conference on Fun with Algorithms (FUN), 2024
In the video game "7 Billion Humans", the player is requested to direct a group of workers to various destinations by writing a program that is executed simultaneously on each worker. While the game is quite rich and, indeed, it is considered one of
Externí odkaz:
http://arxiv.org/abs/2407.07246
Autor:
Giacchini, Breno L., Kolář, Ivan
We study spherically symmetric static solutions of the most general sixth-derivative gravity using series expansions. Specifically, we prove that the only solutions of the complete theory (i.e., with generic coupling constants) that possess a Frobeni
Externí odkaz:
http://arxiv.org/abs/2406.00997
In this paper we carry out a detailed analysis of the static spherically symmetric solutions of a sixth-derivative Lee--Wick gravity model in the effective delta source approximation. Previous studies of these solutions have only considered the parti
Externí odkaz:
http://arxiv.org/abs/2308.12810
Publikováno v:
Nuclear Physics B 1007, 116674 (2024)
In this work we study static spherically symmetric solutions of effective field equations related to local and nonlocal higher-derivative gravity models, based on their associated effective delta sources. This procedure has been applied to generate m
Externí odkaz:
http://arxiv.org/abs/2308.12251
Certain approaches to quantum gravity and classical modified gravity theories result in effective field equations in which the original source is substituted by an effective one. In these cases, the occurrence of regular spacetime configurations may
Externí odkaz:
http://arxiv.org/abs/2307.12357
Autor:
Calcagni, Gianluca, Giacchini, Breno L., Modesto, Leonardo, Netto, Tibério de Paula, Rachwał, Lesław
We extensively study the ultraviolet quantum properties of a nonlocal action for gravity nonminimally coupled to matter. The theory unifies matter and gravity in an action principle such that all the classical solutions of Einstein's theory coupled t
Externí odkaz:
http://arxiv.org/abs/2306.09416
Publikováno v:
Proceedings of The 26th International Conference on Artificial Intelligence and Statistics (AISTATS), 2023, pages 4757-4767, volume 206
In this work we consider the problem of fitting Random Utility Models (RUMs) to user choices. Given the winner distributions of the subsets of size $k$ of a universe, we obtain a polynomial-time algorithm that finds the RUM that best approximates the
Externí odkaz:
http://arxiv.org/abs/2305.13283
Publikováno v:
Nuclear Physics B, Vol 1007, Iss , Pp 116674- (2024)
In this work we study static spherically symmetric solutions of effective field equations related to local and nonlocal higher-derivative gravity models, based on their associated effective delta sources. This procedure has been applied to generate m
Externí odkaz:
https://doaj.org/article/91c93c771e24436ba1dd4b7d8b0922b0
Autor:
Marques Assis, Isabella1, Giacchini, Vanessa1 vanessa.giacchini@ufrn.br
Publikováno v:
Revista CEFAC. 2024, Vol. 26 Issue 6, p1-11. 11p.