Zobrazeno 1 - 10
of 3 782
pro vyhledávání: '"A. Bardají"'
Autor:
Alonso-Bardaji, Asier
We present a canonical model of spherical gravity with covariant corrections motivated by loop quantum gravity. The effective Hamiltonian defines univocally a family of geometries that generalizes the Lema\^itre-Tolman-Bondi spacetimes, and they can
Externí odkaz:
http://arxiv.org/abs/2410.20529
Autor:
Alonso-Bardaji, Asier, Brizuela, David
We provide a covariant framework to study singularity-free Lema\^itre-Tolman-Bondi spacetimes with effective corrections motivated by loop quantum gravity. We show that, as in general relativity, physically reasonable energy distributions lead to a c
Externí odkaz:
http://arxiv.org/abs/2312.15505
Autor:
Alonso-Bardaji, Asier, Brizuela, David
We study covariant models for vacuum spherical gravity within a canonical setting. Starting from a general ansatz, we derive the most general family of Hamiltonian constraints that are quadratic in first-order and linear in second-order spatial deriv
Externí odkaz:
http://arxiv.org/abs/2310.12951
Autor:
Álvaro Tamayo-Velasco, Rocío López-Herrero, Lara María Gómez-García, Laura Sánchez-de Prada, Gerardo Aguilar-Monserrate, Marta Martín-Fernández, Miguel Bardají-Carrillo, Alejandro Álvaro-Meca, Eduardo Tamayo, Salvador Resino, José Pablo Miramontes-González, María Jesús Peñarrubia-Ponce
Publikováno v:
Journal of Infection and Public Health, Vol 17, Iss 6, Pp 939-946 (2024)
Background: COVID-19-associated pulmonary aspergillosis (CAPA) has emerged as a relatively common complication. Multiple studies described this relationship in critical patients, however its incidence and outcome in other risk groups such as immunosu
Externí odkaz:
https://doaj.org/article/92bb4b821ad048a0ab36def860369a2e
We study spherical charged black holes in the presence of a cosmological constant with corrections motivated by the theory of loop quantum gravity. The effective theory is constructed at the Hamiltonian level by introducing certain correction terms u
Externí odkaz:
http://arxiv.org/abs/2302.10619
Autor:
R. López-Herrero, L. Sánchez-de Prada, A. Tamayo-Velasco, M. Heredia-Rodríguez, M. Bardají Carrillo, P. Jorge Monjas, O. de la Varga-Martínez, S. Resino, G. Sarmentero-López de Quintana, E. Gómez-Sánchez, E. Tamayo
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-8 (2024)
Abstract We realize a nationwide population-based retrospective study to analyze the characteristics and risk factors of fungal co-infections in COVID-19 hospitalized patients as well as describe their causative agents in the Spanish population in 20
Externí odkaz:
https://doaj.org/article/add3f3815f2c41ef96babc35ddf4a5d5
Autor:
Mar Rocamora-Horrach, Óscar M. Peiró, Alfredo Bardají, Javier Flores-Benítez, Miguel Ivorra-Cámara, Anna Carrasquer, José Luis Ferreiro
Publikováno v:
Frontiers in Cardiovascular Medicine, Vol 11 (2024)
BackgroundCardiovascular disease has traditionally been studied predominantly in men, but understanding its manifestations in women is crucial for effective management. This study aims to evaluate the long-term prognosis of female patients with acute
Externí odkaz:
https://doaj.org/article/d7e0da1c332b43d891c272913b1f94bc
Publikováno v:
Phys. Rev. D 106 (2022) 2, 024035
We present a covariant model of a spherically symmetric black hole with corrections motivated by loop quantum gravity. The effective modifications, parametrized by a positive constant $\lambda$, are implemented through a canonical transformation and
Externí odkaz:
http://arxiv.org/abs/2205.02098
Autor:
Ángeles Jiménez‑Higueras, David García‑González, Hannah Pethen, Liz Jones, Teresa Bardají, Antonio Martínez, Sergio Sánchez‑Moral
Publikováno v:
Pražské Egyptologické Studie, Iss 31, Pp 42-72 (2023)
This paper describes the archaeological, topographical and geomorphological survey and modelling of the topography of Dra Abu el Naga from prior to the building of the New Kingdom tombs until today. The ancient topography of Dra Abu el Naga has been
Externí odkaz:
https://doaj.org/article/35b6d377630b4419bed317611fb86e48
We present an effective theory to describe the quantization of spherically symmetric vacuum in loop quantum gravity. We include anomaly-free holonomy corrections through a canonical transformation of the Hamiltonian of general relativity, such that t
Externí odkaz:
http://arxiv.org/abs/2112.12110