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Entangled pairs in evaporating black holes without event horizons

Autor: Agullo, Ivan, Cabrera, Paula Calizaya, Navascués, Beatriz Elizaga

Publikováno v: Phys. Rev. D 110, 085002 (2024)

Investigations into Hawking radiation often assume a black hole model featuring an event horizon, despite the growing consensus that such causal structures may not exist in nature. While this assumption is not crucial for deriving the local propertie

Externí odkaz: http://arxiv.org/abs/2407.03031

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On the evolution of the volume in Loop Quantum Cosmology

Autor: Navascués, Beatriz Elizaga

Publikováno v: Class. Quantum Grav. 41, 145004, 2024

The dynamics of the expectation value of the volume is one of the key ingredients behind the replacement of the Big Bang singularity by a bounce in Loop Quantum Cosmology. As such, it is of great importance that this quantity is mathematically well-d

Externí odkaz: http://arxiv.org/abs/2311.18066

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Effects of the inflaton potential on the primordial power spectrum in Loop Quantum Cosmology scenarios

Autor: Navascués, Beatriz Elizaga, Marugán, Guillermo A. Mena, Carrilero, Jesús Yébana

Publikováno v: Phys. Rev. D 108, 083521 (2023)

In scenarios of physical interest in Loop Quantum Cosmology, with a preinflationary epoch where the kinetic energy of the inflaton dominates, the analytic study of the dynamics of the primordial fluctuations has been carried out by neglecting the inf

Externí odkaz: http://arxiv.org/abs/2307.12026

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Fock quantization of a Klein-Gordon field in the interior geometry of a nonrotating black hole

Autor: Cortez, Jerónimo, Navascués, Beatriz Elizaga, Marugán, Guillermo A. Mena, Torres-Caballeros, Alvaro, Velhinho, José M.

We study the canonical quantization of a scalar field in a Kantowski-Sachs spacetime. For simplicity, we consider compactified spatial sections, since this does not affect the ultraviolet behavior. A time-dependent canonical transformation is perform

Externí odkaz: http://arxiv.org/abs/2307.03636

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Extended phase space quantization of a black hole interior model in Loop Quantum Cosmology

Autor: Navascués, Beatriz Elizaga, Marugán, Guillermo A. Mena, Sánchez, Andrés Mínguez

Publikováno v: Phys. Rev. D 108, 106001 (2023)

Considerable attention has been paid to the study of the quantum geometry of nonrotating black holes within the framework of Loop Quantum Cosmology. This interest has been reinvigorated since the introduction of a novel effective model by Ashtekar, O

Externí odkaz: http://arxiv.org/abs/2306.06090

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Hamiltonian formulation and loop quantization of a recent extension of the Kruskal spacetime

Autor: Navascués, Beatriz Elizaga, García-Quismondo, Alejandro, Marugán, Guillermo A. Mena

Publikováno v: Phys. Rev. D 106, 043531 (2022)

We study the Hamiltonian formulation of the Ashtekar-Olmedo-Singh model for the description of the interior geometry of non-rotating, uncharged black holes. This model incorporates loop quantum effects through the introduction of two regularization p

Externí odkaz: http://arxiv.org/abs/2208.00425

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Space of solutions of the Ashtekar-Olmedo-Singh effective black hole model

Autor: Navascués, Beatriz Elizaga, García-Quismondo, Alejandro, Marugán, Guillermo A. Mena

Publikováno v: Phys. Rev. D 106, 063516 (2022)

We consider a general choice of integration constants in the resolution of the dynamical equations derived from a recently proposed effective model that describes black hole spacetimes in the context of loop quantum cosmology. The interest of our ana

Externí odkaz: http://arxiv.org/abs/2207.04677

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