Exploring the construction of field equations for regular black holes with dynamical regularization scalesThe study of the dynamics of regular black holes is an emergent area of research. Recent works have discussed how to deform the Einstein field equations to regularize spherically symmetric black hole…Raúl Carballo-Rubio, Jacopo Mazza·Sep 1, 2026SaveLearn
How Much Geometry Does Horizon Entropy Determine? A Discourse on Entropy, Gravity, and Observable QuantitiesBuilding on Jacobson's thermodynamics derivation of Einstein field equations, the "generalized entropy and varying-G" (GEVAG) framework was proposed to consistently incorporate…Yen Chin Ong·Sep 1, 2026SaveLearn
One-cycle radiation-reaction Magnusian for eccentric binaries through relative 1PN orderWe derive the one-cycle first Magnusian for nonspinning compact binaries on planar, bound eccentric orbits through relative first post-Newtonian (1PN) order and linear order in radiation reaction,…Andrea Placidi·Sep 1, 2026SaveLearn
Geodesics and thermodynamics of a κ-deformed anti-de Sitter black hole surrounded by a quintessence fieldWe investigate the geodesic structure and thermodynamics of a κ-deformed Schwarzschild-anti-de Sitter black hole in a Kiselev quintessence field, where dynamics are governed by a mass-dependent…Faizuddin Ahmed, Ahmad Al-Badawi, Izzet Sakalli et al.·Sep 1, 2026SaveLearn
Dark-Sector Effects on the Phase Structure of Nonlinear Magnetic AdS Black HolesWe investigate the effects of perfect fluid dark matter (PFDM) and a dark-energy field on the phase structure of a nonlinear magnetically charged Anti--de Sitter (AdS) black hole. We find that the…Carlos E. Romero-Figueroa, J. R. Villanueva·Sep 1, 2026SaveLearn
Enabling gravitational-wave astronomy with spin-precessing black holes on generic orbitsBinary black holes (BBHs) formed in dense stellar environments or in hierarchical triples can coalesce on eccentric orbits and carry spins of arbitrary orientation, leaving distinctive imprints on…Aldo Gamboa, Lorenzo Pompili, Alessandra Buonanno et al.·Sep 1, 2026SaveLearn
Bounded Electromagnetic Power Flux at Naked Kasner SingularitiesIn some occasions, it would appear that classical electromagnetic fields could be able to coexist with strong curvature, naked singularities, in the sense that the electromagnetic power flux would be…Franco Fiorini, P. A. González, Yerko Vásquez·Sep 1, 2026SaveLearn
Scalar wave scattering by black holes embedded in dark matter halosWe study the scattering of massless scalar waves by static black holes embedded in dark matter halos. The halo is modelled by means of a Hernquist profile, for which the Einstein equations admit an…Shi-Qian Hu, Federico Piazza·Sep 1, 2026SaveLearn
Gravitational-wave signatures of primordial black hole clusters and the imprint of an early dense-core collapsePrimordial black holes (PBHs) are expected to be born essentially non-spinning and, if the primordial curvature fluctuations possess non-Gaussian tails, strongly clustered. Any spin measured in a PBH…Marc Barceló-Sastre, Juan García-Bellido·Sep 1, 2026SaveLearn
Deviations from Kerr: Polar critical curves and photon rings in a class of separable spacetimesBlack-hole critical curves and photon rings provide complementary probes of strong-field geometry, motivating a unified analytic description of these observables beyond Kerr and a direct comparison…Hao-Peng Yan, Xiang-Qian Li, Xiao-Jun Yue·Sep 1, 2026SaveLearn
Josephson interferometry in an Oppenheimer--Snyder-like scale-dependent black-hole spacetimeWe develop a covariant framework for Josephson transport, superconducting interference, and shunt noise in the scale-dependent exterior generated by an Oppenheimer--Snyder-like collapse. Static…Ali Ovgun, Reggie C. Pantig, G. Lambiase·Sep 1, 2026SaveLearn
Relative-Phase Control of Common-Bridge Survival in Collisions of Radially Excited Boson StarsWe show that the relative phase primarily controls the survival, rather than the initial formation, of the common bridge in head-on collisions of radially excited boson stars. We vary the relative…Bo-Xuan Ge·Sep 1, 2026SaveLearn
Colored-Noise-Induced Horizon Fluctuations Near a Double Root in an Effective Black-Hole GeometryStress-tensor fluctuations carry information that is absent from the mean semiclassical Einstein equation, but their observable effect depends as much on the response of the geometry as on the noise…Kashif Ammar Yasir·Sep 1, 2026SaveLearn
High-Frequency Gravitational-Wave Transduction in a SQUID-Terminated Superconducting CavityHigh-frequency gravitational waves in the MHz--GHz range require detection strategies beyond conventional interferometers. We study the response of a SQUID-terminated superconducting microwave cavity…H. Hadi, Amin Rezaei Akbarieh·Sep 1, 2026SaveLearn
Ultraviolet Closure in Asymptotically Weyl-Invariant GravityWe investigate asymptotically Weyl-invariant gravity (AWIG) in the Palatini formulation, defined by an exponent n that interpolates between an Einstein-like infrared regime, where n goes to one, and…Daniel Coumbe·Sep 1, 2026SaveLearn
Charging higher-dimensional spacetimes with a generalized Kerr-Schild transformationWe explore the construction of higher-dimensional Einstein-Maxwell(-Chern-Simons) solutions from vacuum seeds by means of a generalized Kerr-Schild transformation along a geodesic null vector field…Aravindhan Srinivasan, Marcello Ortaggio·Sep 1, 2026SaveLearn
Dissipative Multi-Field Dynamics from Non-Hermitian Inflationary PotentialsIn this work, we develop a perturbative framework for inflation driven by a complex inflaton with non-minimal gravitational coupling and a non-Hermitian potential. During the observable cosmic…S. D. Campos·Sep 1, 2026SaveLearn
Near-extremal asymptotics and strong cosmic censorship for black holes immersed in a Chaplygin-like dark fluidWe investigate strong cosmic censorship (SCC) for massless scalar perturbations of electrically neutral black holes immersed in a Chaplygin-like dark fluid (CDF). The matter distribution produces an…Hao-Peng Yan, Zeng-Yi Zhang, Xiang-Qian Li et al.·Sep 1, 2026SaveLearn
Constraining AGN Disk Properties with Gravitational Waves from Inspiraling Stellar-Mass Binary Black Holes in Hierarchical Triple SystemsSpace-based gravitational-wave detectors can observe stellar-mass binary black holes (BBHs) long before merger, allowing weak environmental perturbations to accumulate. For binaries embedded in…Jie Wu, Mengfei Sun, Jin Li et al.·Sep 1, 2026SaveLearn
Polarization Images of Neutron Stars Illuminated by a Thin Accretion Disk: A Comparison with Black HolesWe investigate linear polarization images of static, spherically symmetric neutron stars illuminated by a geometrically and optically thin accretion disk. Neutron star equilibrium configurations are…Dan-Dan Feng, Guo-Ping Li, Chen-Yu Yang et al.·Sep 1, 2026SaveLearn
Reissner-Nordstrom in the Bertotti-Robinson-Bonnor-Melvin electromagnetic fieldThe magnetic Reissner-Nordstrom black hole embedded into the Bertotti-Robinson magnetic field is presented. Then it is used, as a seed, to generate, through the Harrison transformation of the…Marco Astorino·Sep 1, 2026SaveLearn
Perturbations and stability of black holes with static scalar hair in general GLPV theoriesWe derive the background equations and complete odd- and even-parity quadratic actions for static, spherically symmetric black holes with radial scalar hair in general quartic-quintic…Petarpa Boonserm, Antonio De Felice, Ratchaphat Nakarachinda et al.·Sep 1, 2026SaveLearn
Circulation and operational sparsity of analogue Hawking radiation in rotating acoustic horizonsTemporal sparsity compares the mean interval between emitted quanta with a characteristic single-quantum timescale. We study this operational quantity for the rotating draining-bathtub acoustic…Fernando M. Belchior, Joao A. A. S. Reis, Edilberto O. Silva·Sep 1, 2026SaveLearn
Directional Response Optimization through Linear Recombination of Time-Delay Interferometry Channels in Space-based Gravitational Wave DetectionSpace-based gravitational-wave detectors such as LISA, Taiji, and TianQin employ time-delay interferometry (TDI) to cancel laser-frequency noise for unequal-arm constellations. Since different TDI…Heng-Sen Jiao, Jing-Rui Zhang, Hong-Bo Jin et al.·Sep 1, 2026SaveLearn
Performance of quantum imaginarity in black hole spacetimeQuantum imaginarity is a fundamental quantum resource essential for quantum information processing. In this paper, we investigate the dynamical evolution behavior of quantum imaginarity for…Shiyan Li, Yimei Yuan, Xiaofen Huang·Sep 1, 2026SaveLearn