Perturbative solutions for the bumblebee field in a Schwarzschild backgroundIn this paper, we investigate the behavior of a vector field subject to a Lorentz-violating quartic potential on a fixed Schwarzschild background. We analyze the equilibrium configuration of the…Demetre Seturidze, Don Colladay·Aug 17, 2026SaveLearn
Constraint on environments with eccentric extreme-mass-ratio inspirals: Bayesian inference and Fisher-matrix for dark-matter spikesExtreme-mass-ratio inspirals (EMRIs) provide sensitive probes of the astrophysical environments surrounding massive black holes. We investigate the inference of dark-matter (DM) spikes with eccentric…Genliang Li, Tieguang Zi·Aug 17, 2026SaveLearn
Reconstruction of f(Q,T) Gravity from Logarithmically Corrected Ricci-Gauss-Bonnet Holographic Dark EnergyThe current paper reports an investigation on the cosmological and thermodynamic behaviour of an f(Q,T) modified-gravity framework in which the gravitational Lagrangian is written as…Preeti Joshi, Ertan Gudekli, Antonio Pasqua et al.·Aug 16, 2026SaveLearn
A Non-Singular Cosmic Bounce in F(Q) Gravity: A Reconstruction and Phase Space AnalysisThe key focus of this research work is the analysis of a non-singular cosmic bounce in the context of F(Q) gravity, with Q representing the non-metricity scalar. We consider the…Nusrat Fatima, M. Sharif·Aug 16, 2026SaveLearn
Hawking Radiation and Second-Order Quantum Corrected Thermodynamics with Black Hole Remnant Formation in a Vaidya-Bonnor Black Hole Surrounded by QuintessenceIn this work, we investigate Hawking radiation and second order quantum corrected thermodynamics of a Vaidya-Bonnor black hole surrounded by quintessence. Within the Hamilton-Jacobi tunneling…Djedai Ayang Kamo, Saleh Mahamat, Ragil Brand Tsafack Ndongmo et al.·Aug 16, 2026SaveLearn
Horizon singularity, energy conditions and shadows in time-dependent and spherically symmetric spacetimeSome dynamical spacetime solutions that describe ultra-compact objects are analysed. We show that by turning a static spacetime that describes a one-way wormhole into a dynamical time-dependent one,…Shin'ichi Nojiri, Sergei D. Odintsov, Diego Sáez-Chillón Gómez et al.·Aug 16, 2026SaveLearn
Characteristic evolution of conformal scattering: I. Scalar Waves in Minkowski SpacetimeWe study the conformal scattering of massless scalar waves in Minkowski spacetime. The conformal scattering problem is formulated as a Goursat (characteristic initial-value) problem of the physical…Zhen-Tao He, Yu Tian, Hongbao Zhang·Aug 16, 2026SaveLearn
Effective metric for bound state in an effective-one-body theory based on the third-post-Minkowskian approximationThe effective-one-body (EOB) framework, originally formulated within the post-Newtonian (PN) expansion, is central to modeling and interpreting gravitational-wave signals. Recent developments have…Hanjun Zou, Sheng Long, Xiaokai He et al.·Aug 16, 2026SaveLearn
Light deflection in the gravitational field of a solar system body with finite distance of source and observer for sub-micro-arcsecond astrometryThe effect of deflection of a light signal that propagates through the gravitational field of a solar system body at rest is considered in the case that the source and the observer are at a finite…Sven Zschocke·Aug 16, 2026SaveLearn
Position-dependent thermalization of two-level probes in de Sitter spacetime: Interplay between Gibbons-Hawking and Unruh effectsWe investigate the thermalization process of two-level probes in de Sitter spacetime from a quantum-metrological perspective. For a static probe separated by a finite distance from a freely falling…Yao Jin·Aug 16, 2026SaveLearn
Gravitational Aharonov-Bohm effect: theory and experimentWe study the quantum interference of two paths that enclose a slowly rotating, infinitely long, and infinitely thin cylindrical shell, using the spacetime metric induced by the gravitational source.…Zhongyou Mo, Leonardo Modesto·Aug 16, 2026SaveLearn
Nonlinear Density Waves and a Galactic-Scale Estimate of the Graviton MassIn February 2016 the LIGO and Virgo collaborations reported the discovery of gravitational waves in merging black holes, with the conclusion that their observational data did not show any violation…Miroslava Vukcevic·Aug 16, 2026SaveLearn
Observational Signatures of Thin Accretion Disks around Rotating Black Holes Embedded in Dark Matter HalosBlack holes embedded in a dark matter background represent an important candidate model that extends the standard vacuum case, characterizing the strong gravitational environments at galactic centers…Jia-Ying Zhang, Wei-Lun Tong, Zhen Li·Aug 16, 2026SaveLearn
Extremal non-rotating black holes have no fermionic LoveThe static tidal Love numbers (TLNs) of 4-dimensional black holes vanish for bosonic perturbations but are generically nonzero for fermions, with rare exceptions. In this paper, we show that for…Xiankai Pang, Yu Tian, Hongbao Zhang·Aug 16, 2026SaveLearn
Order-Sensitive Quantum Distinguishability in Hawking Greybody ScatteringWe study how composition order becomes operationally distinguishable when a phase-sensitive Gaussian control is applied before or after black-hole greybody scattering. The scattering process is…Nazir A. Ganaie·Aug 15, 2026SaveLearn
Quantum-corrected thermodynamics of Schwarzschild AdS black holes in conformal Killing gravityWe study Schwarzschild--AdS black holes in conformal Killing gravity with non-perturbative entropy corrections within the extended phase-space formalism. By deriving the quantum-corrected heat…Saheb Soroushfar, Sayyed Mehrab Ramezani, Hoda Farahani et al.·Aug 15, 2026SaveLearn
Study of gravitational radiation at J for the general type-D Einstein-Maxwell solution with cosmological constantWe characterize the gravitational radiation present in the general Plebański-Demiański type~D solution with cosmological constant Λ of any sign. We show that radiation escapes towards infinity if…Francisco Fernández-Álvarez, José M. M. Senovilla·Aug 15, 2026SaveLearn
Fluid interpretation, Hawking--Ellis classification, and energy conditions of the proper kinetic gravity braiding stress tensorWe investigate the fluid interpretation, Hawking--Ellis classification, and energy conditions of the proper kinetic gravity braiding contribution to the stress tensor of minimally coupled scalar…László Árpád Gergely·Aug 15, 2026SaveLearn
Static Magnetic Brane Solutions in Quartic Quasi-Topological Gravity with Power-Law Maxwell Nonlinear ElectrodynamicsIn this paper, we derive static magnetic brane solutions in quasi-topological gravity, considering the presence of power-law Maxwell nonlinear electrodynamics. The resulting solutions are horizonless…Alireza Alizadeh, Saheb Soroushfar, Mohammad Ghanaatian et al.·Aug 15, 2026SaveLearn
Energy Extraction via Magnetic Reconnection from Rotating ModMax Black HolesMagnetic reconnection has been widely recognized as an important mechanism for extracting energy from rapidly rotating black holes. We find that magnetic reconnection can also efficiently extract…Shi-Hao Wang, Ke-Jian He, Guo-Ping Li et al.·Aug 15, 2026SaveLearn
Magnetic Reconnection and Energy Extraction from a Rotating Black Hole in the Einstein-AdS SU(N)-Nonlinear Sigma ModelIn the present study, we analyze the power and efficiency of energy extraction via magnetic reconnection in the rotating Einstein-AdS-SU(N)-NLSM black hole, both in the circular-orbit regime and in…Muhammad Israr Aslam, Muhammad Nawaz, Abdul Malik Sultan et al.·Aug 15, 2026SaveLearn
Impact of a Cold Dark Matter Halo on Magnetic Reconnection and Energy Extraction from Kerr-like Black HolesRecently, Comisso and Asenjo introduced a new energy extraction mechanism based on magnetic reconnection. In this paper, we investigate the power and efficiency of magnetic reconnection energy…Muhammad Nawaz, Abdul Malik Sultan, Muhammad Israr Aslam et al.·Aug 15, 2026SaveLearn
Probing Dark Matter with Gravitational Waves: Spin-Modulated Dephasing from Black Holes in HalosWe develop a novel analytical framework for constructing axisymmetric black hole spacetimes sourced by dark matter (DM) halos. Applying this to extreme mass ratio inspirals (EMRIs), we find that the…Guoyang Fu, Yunqi Liu, Jian-Pin Wu et al.·Aug 15, 2026SaveLearn
Five-Dimensional Traversable Wormholes in Einstein-Gauss-Bonnet Gravity with a Cloud of StringsWe present an exact static and spherically symmetric traversable wormhole solution in 5D Einstein-Gauss-Bonnet (EGB) gravity supported by a Letelier cloud of strings. The physically admissible…Jaydeep Goswami, Umananda Dev Goswami·Aug 15, 2026SaveLearn
Boundary Obstructions and Lapse Freedom in Static Spherical Hollow CoresWe analyze a sharply delimited comparison problem for a static spherical hollow core: an empty, flat cavity surrounded by a positive matter wall. In the unit-lapse, flat-slice radial…Nelson Bolívar, Gabriel Abellán, Ivaylo Vasilev·Aug 15, 2026SaveLearn