Search Results - "Brizuela, David"

An effective model for the quantum Schwarzschild black hole by Alonso-Bardaji, Asier, Brizuela, David, Vera, Raül

“…We present an effective theory to describe the quantization of spherically symmetric vacuum motivated by loop quantum gravity. We include anomaly-free holonomy…”
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Holonomy and inverse-triad corrections in spherical models coupled to matter by Alonso-Bardaji, Asier, Brizuela, David

“…Loop quantum gravity introduces two characteristic modifications in the classical constraints of general relativity: the holonomy and inverse-triad…”
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xPert: computer algebra for metric perturbation theory by Brizuela, David, Martín-García, José M., Mena Marugán, Guillermo A.

“…We present the tensor computer algebra package xPert for fast construction and manipulation of the equations of metric perturbation theory, around arbitrary…”
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Quantum-Gravitational Effects on Primordial Power Spectra in Slow-Roll Inflationary Models by Brizuela, David, Krämer, Manuel

“…We review the computation of the power spectra of inflationary gauge-invariant perturbations in the context of canonical quantum gravity for generic slow-roll…”
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Mode coupling of Schwarzschild perturbations: Ringdown frequencies by Pazos, Enrique, Brizuela, David, Martín-García, José M., Tiglio, Manuel

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Statistical moments for classical and quantum dynamics: Formalism and generalized uncertainty relations by Brizuela, David

“…The classical and quantum evolution of a generic probability distribution is analyzed. To that end, a formalism based on the decomposition of the distribution…”
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Numerical Techniques in Loop Quantum Cosmology by Brizuela, David

“…In this article, we review the use of numerical techniques to obtain solutions for the quantum Hamiltonian constraint in loop quantum cosmology (LQC). First,…”
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Características clínicas y quirúrgicas de la colecistitis aguda en pacientes con diabetes mellitus tipo II en la Primera Cátedra de Clínica Quirurugica - Sala X del Hospital de Clínicas de San Lorenzo entre los año 2015 y 2021 by Chavez-Rivaldi, Cristhian, Brizuela-Bogado, Javier David, Acosta-Fernández, Rafael

“…RESUMEN Introducción: la colecistitis es la inflamación asociada a infección de la vesícula biliar. Constituye uno de los cuadros de urgencia de origen…”
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Analytic solutions for the Bianchi I universe coupled to several barotropic perfect fluids by Brizuela, David, Uria, Sara F

“…We consider the Bianchi I geometry coupled to several species of comoving barotropic perfect fluids with a linear equation of state in the context of general…”
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Asymptotics of Bianchi IX under the presence of matter: approximate Kasner map by Brizuela, David, Uria, Sara F

“…The goal of this paper is to analyze the effects of the matter fields in the evolution of the Bianchi IX cosmology close to the singularity. Although the…”
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Quantum fluctuations and semiclassicality in an inflaton-driven evolution by Brizuela, David, Pawlowski, Tomasz

“…JCAP 10 (2022) 080 A semiclassical description of quantum systems is applied to probe the dynamics of the cosmological model of an inflationary universe with…”
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Classical and quantum behavior of the harmonic and the quartic oscillators by Brizuela, David

“…In a previous paper a formalism to analyze the dynamical evolution of classical and quantum probability distributions in terms of their moments was presented…”
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Nonsingular collapse of a spherical dust cloud by 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…”
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Hybrid classical-quantum systems in terms of moments by Brizuela, David, Uria, Sara F

“…We present a consistent formalism to describe the dynamics of hybrid systems with mixed classical and quantum degrees of freedom. The probability function of…”
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Complete gauge-invariant formalism for arbitrary second-order perturbations of a Schwarzschild black hole by Brizuela, David, Martín-García, José M., Tiglio, Manuel

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Spacetime geometry from canonical spherical gravity by 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…”
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Generalized boundary conditions in closed cosmologies by Brizuela, David, de Cesare, Marco

“…Phys. Rev. D 107 (2023), 104054 Considering a generalization of the Gibbons-Hawking-York covariant boundary action that depends on both the extrinsic and the…”
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Relativistic effects on the Schr\"odinger-Newton equation by Brizuela, David, Duran-Cabacés, Albert

“…Phys. Rev. D 106 (2022) 124038 The Schr\"odinger-Newton model describes self-gravitating quantum particles, and it is often cited to explain the gravitational…”
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Semiclassical study of the Mixmaster model: the quantum Kasner map by Brizuela, David, Uria, Sara F

“…Phys. Rev. D 106 (2022) 064051 According to the Belinski-Khalatnikov-Lifshitz conjecture, close to a spacelike singularity different spatial points decouple,…”
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Holonomy and inverse-triad corrections in spherical models coupled to matter by Alonso-Bardaji, Asier, Brizuela, David

“…Eur. Phys. J. C 81, 283 (2021) Loop quantum gravity introduces two characteristic modifications in the classical constraints of general relativity: the…”
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