Love numbers of black holes and compact objectsThe Love numbers of a gravitating body are response coefficients encoding its tidal deformability. In compact binary systems, they appear in the gravitational waveform during the inspiral phase and…María J. Rodríguez, Luca Santoni, Adam R. Solomon·Apr 9, 2026SaveLearn
GW231123: False Massive Graviton Signatures from Unmodeled Point-Mass LensingGW231123 is the strongest current candidate for a lensed gravitational wave event and a unique case for testing how point-mass lensing affects propagation-based tests of gravity. In the real GW231123…Baoxiang Wang, Tao Yang·Apr 9, 2026SaveLearn
Thermodynamics and orbital structure of anti-de Sitter black holes in Palatini-inspired nonlinear electrodynamicsWe construct a consistent anti-de Sitter completion of the static and spherically symmetric black-hole solution sourced by the Palatini-inspired nonlinear electrodynamics \(Yn\) model. Starting from…Edilberto O. Silva, João A. A. S. Reis, Faizuddin Ahmed·Apr 9, 2026SaveLearn
Detecting Chiral Gravitational Wave Background with a Dipole Pulsar Timing ArrayThe pulsar timing array (PTA) is a powerful technique for detecting nanohertz gravitational wave backgrounds (GWBs). However, conventional PTAs lack sensitivity to parity violation in the GWB. In…Baoyu Xu, Hanyu Jiang, Rong-Gen Cai et al.·Apr 9, 2026SaveLearn
Observational Quantities in Quasi-Newtonian Descriptions of Cosmological Space-TimesWe investigate measures of distance and redshift in cosmological space-times that admit a shear-free foliation, which we henceforth refer to as `quasi-Newtonian'. Space expands isotropically in…Asta Heinesen, Davide Fontana, Timothy Clifton·Apr 9, 2026SaveLearn
Quasinormal modes of the thick braneworld in f(T) gravityWe investigate the quasinormal modes (QNMs) of a thick brane model in f(T) gravity with f(T) = T + αT2. Requiring the energy density to remain positive and the scalar field to be real constrains…Zi-Jie Li, Hai-Long Jia, Qin Tan et al.·Apr 9, 2026SaveLearn
Unveiling Inner Shadows and Polarization Signatures of Rotating Einstein-Gauss-Bonnet Black HolesBased on the backward ray-tracing method, this paper numerically investigates the shadow and polarization images of rotating Einstein-Gauss-Bonnet (EGB) black hole within the framework of a thin disk…Bing-Bing Chen, Chen-Yu Yang, Deyou Chen et al.·Apr 9, 2026SaveLearn
Coalescing Compact Binary Parameter Estimation with Gravitational Waves in the Presence of non-Gaussian Transient NoiseData from gravitational-wave (GW) detectors often contains a high rate of non-Gaussian transient noise, known as glitches. The parameters estimated from GW signals coinciding with detector glitches…Yannick Lecoeuche, Jess McIver, Alan M. Knee et al.·Apr 9, 2026SaveLearn
Accretion Disks in Schwarzschild-MOG and Kerr-MOG Backgrounds: MOG Parameter in terms of Observational QuantitiesWe apply a general relativistic framework to static and rotating black hole solutions in Scalar-Tensor-Vector Gravity or modified gravity (MOG). Our results yield exact analytic, closed-form…José Miguel Rojas, Mehrab Momennia·Apr 8, 2026SaveLearn
Gravitational wave signal and noise response of an optically levitated sensor in a Fabry-Pérot cavityOptically levitated sensors inside a Fabry-Pérot cavity have been proposed for high-frequency gravitational-wave (GW) detection, though their configuration for gravitational wave sensitivity exhibits…Andrew Laeuger, Shafaq Gulzar Elahi, Shelby Klomp et al.·Apr 8, 2026SaveLearn
Quasinormal-mode residues and pole coalescence in hypergeometric black-hole modelsWe study source-normalized quasinormal-mode residues in radial boundary-value problems reducible to the Gauss hypergeometric equation. Hypergeometric connection coefficients separate the spectral…Ye Zhou·Apr 8, 2026SaveLearn
Spin-charge induced scalarization of Kerr-Newman black holes in the Einstein-Maxwell-scalar theory with scalar potentialWe investigate the spin-charge-induced scalarization of Kerr--Newman (KN) black holes in the Einstein--Maxwell-scalar (EMS) theory with a scalar potential and positive coupling parameter. In the…Xiang Luo, Meng-Yun Lai, Yun Soo Myung et al.·Apr 8, 2026SaveLearn
Exact Gravastar SolutionAstrophysical black holes arise as exact solutions of the Einstein field equations. Therefore, any alternative, such as a gravastar, must satisfy the same level of mathematical rigor and internal…Farook Rahaman, Bikramarka S. Choudhury, Aritra Sanyal et al.·Apr 8, 2026SaveLearn
Does Gravity Render Probability Quasilocal?We propose that probability in quantum theory, like energy in general relativity, acquires a fundamentally quasilocal character in curved spacetime. Interpreting Hermiticity as the symmetry…Oem Trivedi·Apr 8, 2026SaveLearn
Consistency of the LQG quantization of black holes coupled with scalar matter and a clockThe Dirac quantization of spherically symmetric gravity coupled to a scalar field in Loop Quantum Gravity remains unresolved, mainly because of the difficulty in maintaining a consistent constraint…Rodrigo Eyheralde, Rodolfo Gambini·Apr 8, 2026SaveLearn
When waves meet rays: Seismic vibrations and cosmic showers to test gravityWe propose a novel laboratory test of gravity combining seismic-wave measurements with cosmic-ray muon detections. Quantum-gravity corrections to the anharmonic Debye model are derived, yielding a…Aneta Wojnar·Apr 8, 2026SaveLearn
From freely falling frames to the Lorentz gauge-symmetry group and a Hamiltonian composite theory of gravitationThe concept of freely falling frames suggests that gravity exhibits a local Lorentz gauge symmetry and requires a background Minkowski reference frame. The gauge vector fields of a Yang-Mills-type…Hans Christian Öttinger·Apr 8, 2026SaveLearn
Gravitational Lensing as an Optical Framework for Modified Gravity TheoriesWe present a framework that reformulates gravitational lensing as an optical phenomenon governed by an effective refractive index, enabling exploration of modified gravity theories using…Romy Hanang Setya Budhi·Apr 8, 2026SaveLearn
Area bounds and gauge fixing: alternative canonical variables for loop gravityWe use a canonical parametrization of twisted geometries describing the classical phase space of loop quantum gravity on a fixed graph, and establish its explicit correspondence with the associated…Iñaki Garay, Sergio Rodríguez-González, Raül Vera·Apr 8, 2026SaveLearn
Traversable double-throat wormholes in a string cloud backgroundThis work constructs a new class of traversable wormhole solutions with a double-throat topology, modeled as a localized perturbation of the Ellis-Bronnikov metric in a string cloud background.…Yvens Amaral, M. S. Cunha, C. R. Muniz et al.·Apr 7, 2026SaveLearn
Tunnelling across a trapped region and out of a black holeThe quantum field theory for a massless scalar field on a two-dimensional non-singular black hole spacetime with an outer and an inner horizon predicts that there is a non-vanishing probability for a…Edward Wilson-Ewing·Apr 7, 2026SaveLearn
Posterior Predictive Checks for Gravitational-wave Populations: Limitations and ImprovementsWhen selecting a model to characterize an astrophysical population, it is crucial to assess whether that model fits the data and, if not, how it can be improved. To this end, posterior predictive…Simona J. Miller, Sophia Winney, Katerina Chatziioannou et al.·Apr 7, 2026SaveLearn
Probing Kerr symmetry breaking with LISA extreme-mass-ratio inspirals[abridged] Extreme-mass-ratio inspirals (EMRIs) are one of the main sources of gravitational waves (GWs) for LISA. The large number of GW cycles in the EMRI signal makes them very precise probes of…Pablo F. Muguruza, Carlos F. Sopuerta·Apr 7, 2026SaveLearn
Reply to 'Comment on "Ideal clocks -- a convenient fiction"'For a quantum scalar field that is confined in a uniformly linearly accelerated cavity in Minkowski spacetime and interacts linearly with a scalar field that is not confined in the cavity, a…Krzysztof Lorek, Jorma Louko, Andrzej Dragan·Apr 7, 2026SaveLearn
Quasinormal modes of coupled metric-dilaton perturbations in two-dimensional stringy black holesWe investigate the quasinormal modes (QNMs) associated with intrinsic metric-dilaton coupled perturbations of the Mandal-Sengupta-Wadia (MSW) black hole in two-dimensional string theory. Through…Wen-Hao Bian, Zhu-Fang Cui·Apr 7, 2026SaveLearn