Archived weekly pre-prints 22-05-09

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[2205.02229] - Weak Deflection Angle and Greybody Bound of Magnetized Regular Black Hole - Wajiha Javed, Sibgha Riaz, Ali Övgün
[2205.02794] - GUP inspired asymptotic safety in the radiation process of thin accretion disk around a Schwarzschild-like black hole - Himangshu Barman, Anisur Rahaman
[2205.02240] - A Celestial Matrix Model - Arjun Kar, Lampros Lamprou, Charles Marteau, Felipe Rosso
[2205.02436] - Effect of RGUP on the nonlinear Klein-Gordon model with spontaneous symmetry breaking - S. Miraboutalebi, F. Ahmadi, A. Jahangiri

Authors: Asier Alonso-Bardaji, David Brizuela, Raül Vera
Subjects: General Relativity and Quantum Cosmology (gr-qc)
Arxiv link: https://arxiv.org/abs/2205.02098
Abstract 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 a linear combination of the constraints of general relativity, in such a way that the theory remains free of anomalies and general relativity is recovered for $\lambda=0$. In addition, the corresponding metric is constructed in a fully covariant way to ensure that gauge transformations on phase space correspond to coordinate changes. The solution for each gauge choice provides a chart and corresponding line element of a spacetime solution whose geometry is unambiguously determined in terms of the parameter $\lambda$ and a constant of motion $m$. For positive values of $m$, the solution is asymptotically flat and contains a globally hyperbolic black-hole/white-hole region with a minimal spacelike hypersurface that replaces the Schwarzschild singularity. The corresponding exterior regions are isometric and, in particular, allow the computation of the ADM mass. The procedure to obtain the global causal structure of the solution yields, also, its maximal analytic extension.

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[2205.01799] - Snowmass 2021 White Paper: Observational Signatures of Quantum Gravity - Kathryn M. Zurek
[2205.01967] - Complementarity-Entanglement Tradeoff in Quantum Gravity - Yusef Maleki, Alireza Maleki
[2205.02044] - Deformations of the canonical commutation relation and Lorentz symmetry violation - André H. Gomes

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[2205.01106] - On the Equivalence between SRS and PCO Formulations of Superstring Perturbation Theory - Charles Wang, Xi Yin
[2205.01119] - Axion wormholes with massive dilaton - Stefano Andriolo, Gary Shiu, Pablo Soler, Thomas Van Riet
[2205.01567] - Snowmass White Paper: Higher Spin Gravity and Higher Spin symmetry - Xavier Bekaert, Nicolas Boulanger, Andrea Campoleoni, Marco Chiodaroli, Dario Francia, Maxim Grigoriev, Ergin Sezgin, Evgeny Skvortsov

Authors: Abhay Ashtekar, Adrián del Río, Marc Schneider
Subjects: General Relativity and Quantum Cosmology (gr-qc); High Energy Physics - Theory (hep-th); Mathematical Physics (math-ph)
Arxiv link: https://arxiv.org/abs/2205.00298
Abstract The big bang and the Schwarzschild singularities are space-like. They are generally regarded as the “final frontiers” at which space-time ends and general relativity breaks down. We review the status of such space-like singularities from three increasingly more general perspectives. They are provided by (i) A reformulation of classical general relativity motivated by the Belinskii, Khalatnikov, Lifshitz conjecture on the behavior of the gravitational field near space-like singularities; (ii) The use of test quantum fields to probe the nature of these singularities; and, (iii) An analysis of the fate of these singularities in loop quantum gravity due to quantum geometry effects. At all three levels singularities turn out to be less menacing than one might a priori expect from classical general relativity. Our goal is to present an overview of the emerging conceptual picture and suggest lines for further work. In line with the \emph{Introduction to Current Research} theme, we have made an attempt to make it easily accessible to all researchers in gravitational physics.

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[2205.00391] - Polarization distribution in the image of a synchrotron emitting ring around regular black holes - Xueyao Liu, Songbai Chen, Jiliang Jing
[2205.00238] - Quantum Gravitational Corrections to the Geometry of Charged AdS Black Holes - Behnam Pourhassan, Ruben Campos Delgado
[2205.00609] - D-instanton Effects in Type IIB String Theory - Nathan B. Agmon, Bruno Balthazar, Minjae Cho, Victor A. Rodriguez, Xi Yin
[2205.00612] - The quest for a conifold conformal order - Alex Buchel
[2205.00907] - Rectifying No-Hair Theorems in Gauss-Bonnet theory - Alexandros Papageorgiou, Chan Park, Miok Park
[2205.00216] - Twisted geometry for submanifolds of $\mathbb{R}^n$ - Gaetano Fiore, Thomas Weber

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[2204.14122] - Path integral in position-deformed Heisenberg algebra with strong quantum gravitational measurement - Latévi M. Lawson, Prince K. Osei, Komi Sodoga, Fred Soglohu
[2204.14216] - From Noncommutative Geometry to Random Matrix Theory - Hamed Hessam, Masoud Khalkhali, Nathan Pagliaroli
[2204.14206] - Double scaling limits of Dirac ensembles and Liouville quantum gravity - Hamed Hessam, Masoud Khalkhali, Nathan Pagliaroli