Dynamical evolution of quantum mutual information in Schwarzschild spacetimeQuantum mutual information is a fundamental quantity for characterizing correlations among quantum systems. In this work, we investigate the dynamic evolution of the quantum mutual information based…Guosen Ma, Fang Rao, Jingjing Hua et al.·Aug 31, 2026SaveLearn
Positive energy from timelike singularitiesThe energy of various asymptotically AdS and asymptotically flat solutions to the Einstein equations with time-translational invariance and a timelike singularity is computed, spaces with Kasner…Fernando Ruiz Ruiz·Aug 31, 2026SaveLearn
A Fast and Scalable Transformer Pipeline for Binary Black Hole DetectionWith the projected increase in the detection rate of compact-binary coalescences in the coming decade, there is critical need to develop fast, robust, and scalable alternatives to matched filtering…Chayan Chatterjee, Abigail Petulante, Haowei Fu et al.·Aug 31, 2026SaveLearn
Ghost-free higher-gradient Newtonian gravity from the Second Law of ThermodynamicsHigher-gradient modifications of Newtonian gravity remove the point-mass singularity, but their Lagrangian dynamics is haunted by the Ostrogradsky instability. We show that the same field equations…M. Pszota, P. Ván·Aug 31, 2026SaveLearn
Unimodular Gravity with Arbitrary Diffusion Function: A Dynamical System Reconstruction ApproachWe investigate cosmological diffusion models in unimodular gravity within a dynamical systems reconstruction framework. By treating the logarithmic slope of the diffusion sector as an invertible…Gabriel Gómez, Guillermo Palma, Norman Cruz·Aug 31, 2026SaveLearn
Gravitational waves from core collapse of rotating very-massive stars: 3D numerical relativity computationWe numerically study the collapse of rotating, very-massive stellar cores with masses of ≈ 200, 300, 500, and 1100M into black holes using both axisymmetric and three-dimensional…Alan Tsz-Lok Lam, Masaru Shibata, Sho Fujibayashi·Aug 31, 2026SaveLearn
Guiding center quantization of a quantum Hall analog of Hawking radiationWe revisit the quantum Hall analog of Hawking radiation in which a Fermi sea of electrons occupying half of a plane, subjected to a quadrupolar electric potential, gives rise to analog Hawking…Rodrigo Andrade e Silva, Ted Jacobson·Aug 31, 2026SaveLearn
Evolution of Cosmic String Loops under Gravitational BackreactionNambu-Goto cosmic string loops generically develop cusps, points where the string momentarily reaches the speed of light. These cusps produce strong gravitational wave bursts with a characteristic…Lasse Gerblich, Richard A. Battye, E. P. S. Shellard·Aug 31, 2026SaveLearn
Asymptotic Gravitational Radiation of Photon Rockets with Λ: Point, String, and Sheet SourcesWe study the existence of gravitational radiation at infinity for pure-radiation Robinson-Trautman metrics with one spacelike Killing vector and a cosmological constant Λ of arbitrary sign. These…Francisco Fernández-Álvarez, José M. M. Senovilla·Aug 31, 2026SaveLearn
Constants of motion and fundamental frequencies for elliptic orbits at fourth post-Newtonian order: aligned-spin contributionsFor eccentric systems with aligned spins, we compute all spin contributions to the gauge-invariant conservative map between the constants of motion (energy and angular momentum) and the fundamental…David Trestini, Jan Steinhoff·Aug 31, 2026SaveLearn
Bekenstein--Hod Bound: A 3.3σ Confirmation from GW250114Black holes link gravity, thermodynamics and information via limits on the relaxation rate of a perturbed system. The Bekenstein-Hod bound imposes a minimum relaxation time at fixed temperature, but…Hai-Tian Wang, Shao-Peng Tang, Yi-Zhong Fan·Aug 31, 2026SaveLearn
Constraining equation of state of neutron star using neutron star-black hole mergersIn this work, we study tidal effects that can be observed in gravitational wave transient from neutron star-black hole (NSBH) mergers. It has been well known that neutron star's tidal deformation…Vasudev Dubey, Rahul Kashyap, Yugesh Bhoge·Aug 31, 2026SaveLearn
Saha's ionization in the Schwarzschild spacetimeWe investigate the Saha ionization equilibrium in the exterior Schwarzschild spacetime. Starting from the mass-shell condition for a massive particle, we derive the conserved energy associated with…Lázaro L. Sales, Jonatas A. Silva, Amilcar R. Queiroz·Aug 31, 2026SaveLearn
Gravitational-Wave Echoes from Layered Compact Objects: A Double-Shell ModelLayering is a ubiquitous feature of astrophysical objects. Motivated by the fact that physical black holes retain the layered structure of their progenitor stars when viewed in the time concepts…Qi Su, Ding-Fang Zeng·Aug 31, 2026SaveLearn
Geometric origin of intrinsic rigidity for extremal horizonsOur work clarifies the origin of enhanced symmetry of near horizon geometries. We relate this property to an existence of specific foliation by non-expanding horizons. The existence of this foliation…Wojciech Kamiński, Adam Szereszewski·Aug 31, 2026SaveLearn
External magnetic-field effects on dipolar-particle orbits and critical collisions in Kerr--Bertotti--Robinson spacetimeStrong magnetic fields affect particle dynamics through two distinct channels: gravitational backreaction deforms the spacetime, while direct coupling to an intrinsic magnetic moment depends on the…Haowei Chen, Hengyu Xu, Shao-Jun Zhang·Aug 31, 2026SaveLearn
Black hole correspondences of quasi-topological gravity : Shadows, quasinormal modes, graybody factorsWithin the framework of quasi-topological gravity, we systematically investigate the correspondences among three classes of observables---the shadow, the quasinormal modes, and the graybody…Sihao Fan, Chen Wu, Wenjun Guo·Aug 31, 2026SaveLearn
Spacelike reduction of the gravitational topological terms and associated helicity densitiesHelicity in gravity is a multifaceted concept, and several inequivalent definitions exist in the literature. In this work, we reduce the topological Pontryagin and Nieh-Yan terms to a constant time…Hongxi Huang, Jiang Long, Gan Zhao et al.·Aug 31, 2026SaveLearn
Late-time dark energy dynamics in f(Q) gravity: A data-driven analysisThe increasing precision and complementarity of late-time cosmological observations provide new opportunities to test modified gravity against the observed expansion history of the universe. The…Kshetrimayum Govind Singh, Kangujam Priyokumar Singh·Aug 30, 2026SaveLearn
Periodic orbits around a magnetically charged black hole in f(R,T) gravity coupled with Euler-Heisenberg electrodynamicsWe systematically investigate the zoom-whirl periodic orbits of a small compact object orbiting a magnetically charged black hole in f(R, T) gravity coupled with Euler-Heisenberg nonlinear…Jun-Long Huang, Chen-Kai Qiao, Jun Tao·Aug 30, 2026SaveLearn
Exotic Spinor Deformation of a Schwarzschild Black Hole: Perturbations and StabilityIn this work we investigate how exotic spinorial topology modifies the propagation of fermionic modes in the Schwarzschild geometry. By incorporating a topological gradient, ∂μφ, into the…Luís Rodolfo dos Santos Filho, Bertha Cuadros-Melgar·Aug 30, 2026SaveLearn
Two Languages for the Same Resonance: From Nuclear Decay to Black-Hole RingdownQuantum resonances and black-hole quasinormal modes (QNMs) are described by closely related mathematics: radiative boundary conditions, analytic continuation of Green functions or resolvents, poles…Okuto Morikawa·Aug 30, 2026SaveLearn
Peeling property for the Einstein scalar field equations with the nonzero cosmological constantInspired by interaction of gravitational waves, dark matters and dark energy, we study the Einstein scalar field equations with the nonzero cosmological constant for the Bondi-Sachs metrics. We…Jialue Li, Xiao Zhang·Aug 30, 2026SaveLearn
Testing f(Q) Gravity with Logarithmic Equation of State Using Latest Cosmological DataIn this paper, we investigate the late-time accelerated expansion of the Universe in power law f(Q) gravity, where a logarithmic dark energy parametrization is considered:…Chaymae Karam, Dalale Mhamdi, Taoufik Ouali et al.·Aug 30, 2026SaveLearn
Cutoff-Stable Null Convergence and Directional Rigidity in Bianchi I SpacetimesWe derive an endpoint-free optical rigidity theorem and use it to separate two rigidity regimes in Bianchi I spacetimes, without assuming that the spatial metric is diagonal in a fixed basis. For a…Ye Zhou, Alan Zhang·Aug 30, 2026SaveLearn