Skip to content

General Relativity and Quantum Cosmology papers — page 4

gr-qcBrowse archive

Effects of radiation on the Laser Interferometer Lunar Antenna (LILA)
The Moon provides a promising environment for gravitational-wave (GW) observations in the midband. The Laser Interferometer Lunar Antenna (LILA) combines a lunar deformation channel (LDC) and a…
James M. Trippe, Brett N. Shapiro, Chloe A. Champagne et al.Nov 1, 2026
Learn
Gravitational dynamics and backward ray-traced shadows of bumblebee AdS black holes
We investigate the total observed frequency shift of photons emitted by massive geodesic particles in circular orbits near the event horizon of bumblebee AdS black holes. The cosmological effects of…
Muhammad Yasir, Senyue Lou, Zelin Zhang et al.Nov 1, 2026
Learn
Strong gravity physics of dynamical horizons in black hole mergers and its imprint in their gravitational radiation
In a binary black hole merger, the inspiral portion of the gravitational waveform corresponds to two distinct horizons orbiting each other, and the merger and ringdown signals correspond to the final…
Vaishak PrasadOct 31, 2026
Learn
Daemon sub Ponte: The Cost of a Second Black Hole (A Scholium on an ER=EPR Thought Experiment)
A thought experiment in the ER=EPR and related literature involves collecting the Hawking radiation of an old black hole, then collapsing it into a second, entangled black hole. In this short note,…
Yen Chin OngOct 31, 2026
Learn
Probing Hidden Dimensions with Multimessenger Gravitational Waves
The dimensionality of spacetime is a fundamental property of nature, yet whether our observed four-dimensional spacetime is embedded in a higher-dimensional geometry remains experimentally…
Hanlin Song, Minghui Du, Peng XuOct 31, 2026
Learn
Excess inner-horizon entropy and the thermodynamics of Kerr formation
We develop a charge-matched thermodynamic framework for the regular rotating black-hole family underlying an exact model of Kerr formation. Since the Kerr endpoint already possesses a…
Francisco S. N. Lobo, Jorge Ovalle, Manuel E. RodriguesOct 31, 2026
Learn
The structured pseudospectrum of Schwarzschild black hole
The non-Hermitian nature of black hole quasinormal modes (QNMs) can give rise to remarkable spectrum instability. Such instability is naturally characterized by the pseudospectrum for the operator.…
Liang-Bi Wu, Yu-Sen Zhou, Ming-Fei Ji et al.Oct 31, 2026
Learn
Dimensional dependence of critical phenomena in black hole interiors
We numerically investigate the interior dynamics of D dimensional Reissner-Nordström (RN) black holes perturbed by a real scalar field. Strong perturbations destroy the null inner horizon and…
Li-Jie Xin, Xiangdong ZhangOct 31, 2026
Learn
Near-extremal critical dynamics driven by a phantom field in Einstein-Maxwell-scalar theory
We investigate the fully nonlinear dynamics of Einstein-Maxwell-scalar black holes in the low-mass, near-extremal region of the solution space, which is difficult to access with conventional…
Zhen-Kun Jia, Lang Zhao, Lin Chen et al.Oct 31, 2026
Learn
Unitary implementability of Darboux transformations
We investigate the unitary implementability of the canonical transformations corresponding to Darboux transformations in the Hamiltonian formalism recently developed for gauge invariant perturbations…
Guillermo A. Mena Marugán, Alvaro Torres-Caballeros, José VelhinhoOct 31, 2026
Learn
Absorption and scattering of massless scalar waves by black holes with scalar hair
We use partial waves to study massless scalar absorption and scattering by the normal (ξ=5) and phantom (ξ=-2) Bakopoulos--Nakas black holes, described by mass M and scalar charge q. At fixed…
Lina Zhang, Yun Soo Myung, Yu-Xuan Wang et al.Oct 31, 2026
Learn
Charged Gravastars with Casimir Energy in Quadratic f(T) Gravity
We investigate a charged gravastar configuration in the framework of modified teleparallel gravity, considering the quadratic form f(T)=T+αT2 and incorporating Casimir vacuum energy as a source…
S. R. Harshitha, C. S. Varsha, V. Venkatesha et al.Oct 31, 2026
Learn
Holonomy classification, gyroscope precession, and Landau levels in Gödel-type spacetimes and their superfluid analog
We derive the parallel-transport holonomies of circles centered on the symmetry axis in the homogeneous Gödel-type family of Rebouças and Tiomno, which includes the Gödel universe, the causal member…
Claudio Furtado, G. Q. Garcia, Abdullah Guvendi et al.Oct 31, 2026
Learn
The Fluctuation-Dissipation Theorem and Dynamical Love Number in Schwarzschild Black Holes
We study the real-time response of a Schwarzschild black hole in the Hartle-Hawking state to an external massless scalar field. Using a complexified radial contour to represent the Schwinger-Keldysh…
Dimitrios Giataganas, Alex Kehagias, Antonio RiottoOct 31, 2026
Learn
Exact scalarization thresholds and onset laws for a nonminimally coupled scalar field on the Ellis wormhole
We study a real scalar field nonminimally coupled to curvature on a fixed Ellis wormhole background. The scalar perturbation decouples at linear order, and the substitution x=a z reduces its…
Abdullah Guvendi, Omar Mustafa, Claudio FurtadoOct 31, 2026
Learn
Nonlinear stability of Schwarzschild black holes for the Einstein-massless Dirac system in spherical symmetry
In this paper, we establish the nonlinear stability of the Schwarzschild exterior for the spherically symmetric Einstein-massless Dirac system. More precisely, we consider sufficiently small…
Lamberto TresoldiOct 30, 2026
Learn
Strong-coupling of Minkowski spacetime in f(R) gravity: a Hamiltonian perspective
A Hamiltonian analysis of f(R) gravity in the perturbation field approximation is performed. The action principle is presented as a series expansion around a generic fixed background with constant…
Aldair PantojaOct 30, 2026
Learn
Quantum superposition of Cosmic String spacetimes
Since the quantum nature of spacetime is anticipated by a theory of Quantum Gravity, the possibility of spacetime superposition would be a natural consequence. This spacetime interference phenomena…
Enrique Arias, Shoshauna Gauvin, Willy Izquierdo et al.Oct 30, 2026
Learn
Hyperbolic scaling of the small-exponent limit in magnetic nonlinear electrodynamics
A magnetic spacetime can approach Schwarzschild while its electromagnetic characteristics remain singular in the same parameter limit. We study this separation in fractional-power nonlinear…
Jonathan A. Rebouças, R. Martínez von Dossow, Edson OtonielOct 30, 2026
Learn
A Charged Compact Star Solution for a Conducting Sphere
This paper considers the simplest charged stellar model, namely, a uniform density star with electric charge distributed on its surface. In this model, we treat the uniform density star as a…
Kai LinOct 30, 2026
Learn
Scattering of massless scalar waves by higher-dimensional regular black holes in general relativity coupled to nonlinear electrodynamics
We study the scattering of planar massless scalar waves by the family of higher-dimensional regular black holes in general relativity coupled to nonlinear electrodynamics, which unifies the Bardeen…
Bobir Toshmatov, Askar Abdikamalov, Sardor TojievOct 30, 2026
Learn
Neutrino Oscillation in a Static Dihole Geometry
We investigate neutrino flavor oscillations in the static equal-mass Majumdar-Papapetrou dihole geometry, restricting the propagation to the symmetry plane. Within the null approximation, we derive…
Rogério Capobianco, Rafael C. R. de LimaOct 30, 2026
Learn
Finite-Depth Null Capture and Mass-History Sensitivity in Vaidya Spacetime
We formulate a finite-depth endpoint map for past-directed null rays in dynamical black-hole spacetimes, retaining an unresolved label when no terminal is reached before a prescribed optical depth.…
Jorge Luis Palamara, Jorge R. PalamaraOct 30, 2026
Learn
From thermogravity to thermocosmology with a running non-conservation scale
Thermogravity offers a novel approach to cosmic acceleration, deriving trace-free gravitational equations and matter non-conservation from thermodynamic processes in spacetime. We extend this…
Emmanuel N. SaridakisOct 30, 2026
Learn
Homogeneous Spectral Freedom and Hadamard Consistency of Perturbative Green Functions
Perturbative mode equations often admit formally different particular solutions whose spectral sums appear to have different short-distance singularities. We formulate a general diagnostic which…
Bekir Can LütfüoğluOct 30, 2026
Learn
← PreviousPage 4Next →