Entropy-Deformed Hamiltonian Dynamics of Schwarzschild Black Holes: A Superstatistical ApproachWe study the effective dynamics of the Schwarzschild black hole interior by introducing entropic deformations derived from generalized superstatistical entropies S+ and S-. The resulting…O. Garcia, O. Obregón, J. Ríos Padilla·Apr 11, 2026SaveLearn
Born-Infeld-f(R) black holesWe explore black hole solutions in the context of Born-Infeld-f(R) gravity, a modified gravitational framework that extends both Born-Infeld and f(R) theories. By adopting a static, spherically…Salih Kibaroğlu·Apr 11, 2026SaveLearn
Cosmological Parameters in f(T) Gravity: Theoretical and Observational AnalysisThe f(T) gravity is one of the extensions of teleparallel equivalent of general relativity, in which more general functions of the torsion scalar T can be described. With the proposed functional…Suraj Kumar Behera, S. A. Kadam, Pratik P. Ray et al.·Apr 11, 2026SaveLearn
Geodesic structure of spacetime near singularitiesGeodesic flows emanating from an arbitrary point P in a manifold M carry important information about the geometric properties of M. These flows are characterized…Mayank, Dawood Kothawala·Apr 11, 2026SaveLearn
Black Hole Dynamics at Fifth Post-Newtonian OrderUsing the worldline action in [2409.05860], we derive the total even-in-velocity (relative) impulse, scattering angle, and time delay at fifth post-Newtonian (5PN) order, including radiation-reaction…Rafael A. Porto, Massimiliano M. Riva·Apr 10, 2026SaveLearn
Flux enhancement of corotating hot spots in accretion disks from the slow-light effectWith the Event Horizon Telescope and future Very Long Baseline Interferometry arrays poised to image supermassive black holes, there is a strong motivation to understand the dynamic aspects of the…Qing-Hua Zhu·Apr 10, 2026SaveLearn
Probing the Kinematic Dipole with LISA: an analytical treatmentThe motion of the Solar System with respect to the cosmic rest frame induces a kinematic dipole in the stochastic gravitational-wave background (GWB). Detecting this signal with space-based…Jacopo Fumagalli, Giulia Cusin, Cyril Pitrou et al.·Apr 10, 2026SaveLearn
Relativistic figures of equilibrium in the Wald magnetosphereWe consider a self-gravitating, rigidly rotating charged perfect fluid immersed in the Wald magnetosphere, constructed out of two linearly independent Killing vectors present in stationary and…Paweł Doruchowski, Patryk Mach, Audrey Trova et al.·Apr 10, 2026SaveLearn
Testing the Kerr hypothesis beyond the quadrupole with GW241011All multipole moments of a Kerr black hole are uniquely determined by its mass and spin. Gravitational wave observations can test this prediction by measuring spin-induced multipole moments imprinted…Rimo Das, N. V. Krishnendu, M. Saleem et al.·Apr 10, 2026SaveLearn
New Exact Vacuum Solutions in Extended Bumblebee GravityWe investigate the static spherically symmetric vacuum solutions in a generalized bumblebee gravity model characterized by non-minimal couplings B2 R and BμBνRμν. We demonstrate that the…Jie Zhu, Hao Li·Apr 10, 2026SaveLearn
Gravitational Memory from Hairy Binary Black Hole MergersGravitational-wave memory is a low-frequency, non-oscillatory component of the radiation field that provides a potentially powerful but as yet undetected probe of strong-field gravity. We present the…Silvia Gasparotto, Jann Zosso, Llibert Aresté Saló et al.·Apr 10, 2026SaveLearn
The near equilibrium Einstein-Boltzmann system with a simplified collision termA simplified relativistic kinetic theory for gases with internal degrees of freedom, based on a BGK-type collision term, is considered. First the Boltzmann equation is rewritten in tetrad form and…Philip Semrén, Michael Bradley, João M. S. Oliveira et al.·Apr 10, 2026SaveLearn
Finite Hilbert space and maximum mass of Schwarzschild black holes from a Generalized Uncertainty PrincipleWe show that implementing a generalized uncertainty principle (GUP) with both minimal length and maximal momentum directly on the reduced phase space of the Schwarzschild black hole (BH) leads to a…S. Jalalzadeh, H. Moradpour·Apr 10, 2026SaveLearn
Weyl-type solutions with multipolar scalar fieldsA class of solutions in d-dimensional Einstein gravity minimally coupled to a massless scalar field is studied, where the spacetime metric is of a generalized Weyl form with d-2 commuting Killing…Yen-Kheng Lim·Apr 10, 2026SaveLearn
Genericness of quantum damping of cosmological shear in modified loop quantum cosmologyIn arXiv:2603.18175, the authors argue, based on numerical studies of particular cases, that the quantum damping of cosmological shear in a modified loop quantum cosmological model (mLQC-I) that was…Wen-Cong Gan, Leila L. Graef, Rudnei O. Ramos et al.·Apr 10, 2026SaveLearn
Metric affine gravity with dynamical chronology protectionModified theories of gravity often introduce geometric structure beyond general relativity in order to address unresolved problems in the gravitational sector without invoking ad hoc matter fields.…Moustafa Ismail, David Mattingly·Apr 9, 2026SaveLearn
Positivity of holographic energyWe prove positivity of a weighted holographic energy for four-dimensional spacetimes with negative cosmological constant whose conformal boundary at infinity is conformally static and admits either…Piotr T. Chruściel, Raphaela Wutte·Apr 9, 2026SaveLearn
Spin-(0, 1, 12) Field Perturbations, Quasinormal Modes, Overtones, Greybody Factors and Strong Cosmic Censorship of Einstein-Skyrme Black HolesWe carry out a multi-spin perturbation-theory study of the four-dimensional Einstein-Skyrme (ES) anti-de Sitter (AdS) black hole (BH), whose lapse f(r)=1-8πK-2M/r+4πKλ/r2 inherits two couplings…Faizuddin Ahmed, Ahmad Al-Badawi, İzzet Sakallı·Apr 9, 2026SaveLearn
Extended Gravity Theories from a Thermodynamic PerspectiveWe extend the thermodynamic derivation of gravity in the Jacobson framework by generalizing the Clausius relation through a nontrivial entropy functional. We show that entropy deformations appear as…H. R. Fazlollahi·Apr 9, 2026SaveLearn
Oppenheimer-Snyder Collapse in f(R) Gravity : Stalemate or Resolution?We study the Oppenheimer--Snyder (OS) collapse problem in metric f(R) gravity by matching a homogeneous dust Friedmann--Lemaître--Robertson--Walker (FLRW) interior to a generalized Vaidya exterior…Soumya Chakrabarti, Apratim Ganguly, Radouane Gannouji et al.·Apr 9, 2026SaveLearn
Evaluating Deep Learning Models for Multiclass Classification of LIGO Gravitational-Wave GlitchesGravitational-wave detectors are affected by short-duration non-Gaussian noise transients, commonly referred to as glitches, which can obscure astrophysical signals and complicate downstream…Rudhresh Manoharan, Gerald Cleaver·Apr 9, 2026SaveLearn
Prompt Response from Plunging Sources in Schwarzschild SpacetimeGravitational waves generated by moving sources in Schwarzschild spacetime can be decomposed into three principal components: quasinormal modes, tail, and prompt response. While the first two have…Sizheng Ma·Apr 9, 2026SaveLearn
Tidal Response of Compact ObjectsThe tidal response of compact objects provides a powerful probe of their internal structure and of the surrounding gravitational field. We provide a comprehensive and unified overview of tidal…Sumanta Chakraborty, Paolo Pani·Apr 9, 2026SaveLearn
Analog regular black holes and black hole mimickers for surface-gravity waves in fluidsRecent advances in the observation of black-hole candidates have renewed interest in probing their near-horizon structure and in searching for departures from the standard singular solutions of…Valentin Pomakov, Stefano Liberati·Apr 9, 2026SaveLearn
Minimum mass, maximum charge and hyperbolicity in scalar Gauss-Bonnet gravityWe study the loss of hyperbolicity of perturbation equations for black hole solutions of scalar Gauss-Bonnet gravity. We consider a class of coupling functions allowing for static black hole…Dario Rossi, Leonardo Gualtieri, Thomas P. Sotiriou·Apr 9, 2026SaveLearn