Thermodynamics of the Gravity from Entropy theoryThe Gravity from Entropy (GfE) action posits that gravity that is fundamentally given by the information encoded in the interplay between matter and geometry. The GfE Lagrangian is given by the…Ginestra Bianconi·Jul 27, 2026SaveLearn
Quantum-Corrected Bondi Mass for 2D Hawking RadiationWe derive the Hamiltonian for general semi-classical 2D dilaton gravity, beginning with the complete action including the Polyakov action and Gibbons-Hawking-York boundary term. The value of the…Jonathan Barenboim, Andrei V. Frolov, Gabor Kunstatter·Jul 27, 2026SaveLearn
Machine Learning based Glitch Veto for inspiral binary merger signals using Linear Chirp TransformTransient non-Gaussian noise artifacts commonly known as glitches remain a major challenge in gravitational wave (GW) detection because they can mimic genuine compact binary coalescence signals and…N. Arutkeerthi, Xiyuan Li, Cindy Cui et al.·Jul 27, 2026SaveLearn
Deformed Schwarzschild horizons in second-order perturbation theory: mass, geometry, and teleologyIn recent years, gravitational-wave astronomy has motivated increasingly accurate perturbative studies of gravitational dynamics in compact binaries. This in turn has enabled more detailed analyses…Riccardo Bonetto, Adam Pound, Zeyd Sam·Jul 27, 2026SaveLearn
Sharp Tangential NEC Minimization and Israel Surface Layers in Schwarzschild Mass InterpolationsWe study static, spherically symmetric metrics in Schwarzschild gauge whose mass function increases smoothly from M1 to M2>M1 across an annulus [R1,R2] outside the larger Schwarzschild…Changsun Choi, Ryan E. Grady·Jul 26, 2026SaveLearn
Observational Constraints on Emergent Fractional Fractal CosmologyWe constrain the Emergent Fractional Fractal (EFF) cosmological model through a joint likelihood analysis of recent cosmological observations at the background and perturbation levels. In this…Raheleh Jalalzadeh, Hooman Moradpour, Shahram Jalalzadeh·Jul 26, 2026SaveLearn
Canonical Clock Sectors and Relational Frame Equivalence in Brans--Dicke TheoryWe investigate the equivalence of the Jordan and Einstein frames of the Brans--Dicke theory before and after relational deparametrization of the constrained Hamiltonian system. Although the two…Yaser Tavakoli, Jerzy Lewandowski·Jul 26, 2026SaveLearn
Exploring Quantum Corners: How Curved Momentum Space Shapes BTZ Black HolesPlanck-scale signatures of quantum gravity may emerge semiclassically not only through modifications of spacetime geometry but also through the geometry of momentum space. In this work, we develop a…Partha Nandi·Jul 26, 2026SaveLearn
Wormhole Geometries in Extended Symmetric Teleparallel Gravity with f(Q, T) = αQ + βT + γT2In this study, we study static and spherically-symmetric wormhole configurations within the recently proposed class of extended symmetric teleparallel gravities characterised by the functional form…Sara Rastgoo, Foad Parsaei·Jul 26, 2026SaveLearn
Upper bounds on the force function in spatially regular self-gravitating matter configurationsWe use the non-linearly coupled Einstein-matter field equations to prove four theorems that bound from above the dimensionless force function F=4πr2· p(r) in spatially regular curved…Shahar Hod·Jul 26, 2026SaveLearn
Two-Horizon Sector Thermodynamics as a Diagnostic for the Bi-Hair Organization of NUT ChargeAfter decades without a fully self-consistent thermodynamic formulation, recent proposals for Lorentzian Taub-NUT spacetime have yielded several inequivalent descriptions, each satisfying its own…Di Wu, Robert B. Mann, Shuang-Qing Wu·Jul 26, 2026SaveLearn
Ghost Dark Energy in the Modified Kaniadakis CosmologyWe investigate ghost dark energy (GDE) in a cosmological framework derived from Kaniadakis entropy. By applying the first law of thermodynamics to the FRW apparent horizon, we obtain modified…A. Dezhakam, A. Sheykhi, A. Dehyadegari·Jul 26, 2026SaveLearn
Black hole shadow parameters and quasi-normal modes for Weyl-incorporated gravityAn additional term of the form λT · C · T in the Einstein-Hilbert Lagrangian was introduced to explain the interaction between matter and pure gravitational field…Noraiz Tahir, Mubasher Jamil, Kaynat Fatima et al.·Jul 26, 2026SaveLearn
Non-Abelian monopoles in Einstein-scalar-Gauss-Bonnet gravityWe study static, spherically symmetric self-gravitating non-Abelian 't Hooft-Polyakov monopoles in Einstein-scalar-Gauss-Bonnet gravity for two classes of scalar-Gauss-Bonnet coupling functions.…Vladimir Dzhunushaliev, Vladimir Folomeev·Jul 26, 2026SaveLearn
Fractional Holographic Dark Energy Wormholes: A Comprehensive Geometrical, Physical, and Thermodynamic InvestigationThe discovery of the accelerated expansion of the cosmos has sparked great interest in studying the nature of the mysterious force behind this effect, often called dark energy. Several theories were…M. Rizwan, Z. Yousaf·Jul 26, 2026SaveLearn
Search for continuous gravitational waves from the pulsar J0435+3233We perform a search for continuous gravitational waves from J0435+3233 using LIGO O4a public data. J0435+3233 is unique among millisecond pulsars as it exhibits an exceptionally large spin-down and…Brian McGloughlin, Jing Ming, Maria Alessandra Papa et al.·Jul 26, 2026SaveLearn
Black hole solutions with a linear equation of state in Hořava gravity and Einstein--æther theoryWe provide a procedure to obtain black hole (BH) solutions in Hořava gravity and Einstein--æther theory (HG--EA) for the spherically symmetric (SS) case with a static æther. This procedure consists…Milko Estrada·Jul 26, 2026SaveLearn
A Modified Gravitational Theory of the Matter Sector of the Type ϕ(R,T)LmWe investigate a modified gravity framework where the geometric Einstein--Hilbert sector remains untouched while the matter Lagrangian is weighted by a nontrivial function ϕ(T) of the…Gines R. Pérez Teruel, Antonio Peña Peña·Jul 26, 2026SaveLearn
Extra Attraction Generated by Spacetime FluctuationsWe show that, due to the nonlinear nature of gravity, fluctuations in spacetime curvature generate additional gravitational attraction. This fluctuation-induced extra attraction was overlooked in the…Qingdi Wang·Jul 26, 2026SaveLearn
Hair or a Boundary Source? Covariant Phase Space of a Static Type-I Black HoleWe study the two-parameter static type-I vacuum black hole recently obtained from an electromagnetic seed by a nonlinear solution-generating map. Its parameter B changes dimensionless horizon…Yi-kun Li·Jul 25, 2026SaveLearn
On the effect of gravitational repulsion on geodesic deviation in the Schwarzschild-de Sitter spacetimeHere we discuss the effect of gravitational repulsion on geodesic deviation in the Schwarzschild-de Sitter spacetime. In particular, the geodesic deviation shows different behaviour inside or outside…Rohit Ghosh, Biplab Raychaudhuri, Aditya S. Mondal et al.·Jul 25, 2026SaveLearn
Dark matter imprints on a caustic encounter in an effective spinning black hole binary lensWe ask whether a cored dark matter (DM) correction can leave a resolved caustic trace after a spinning vacuum binary is allowed to imitate it. The vacuum comparison varies lens scale, common spin,…Mohsen Fathi·Jul 25, 2026SaveLearn
Traversable Wormhole De-singularization: Almost η-Ricci-Yamabe Solitons in Static Spherically Symmetric Imperfect Fluid SpacetimesIn this paper, we investigate the almost η-Ricci-Yamabe soliton as a fundamental geometric regulator for a static, spherically symmetric black hole coupled to an imperfect fluid. We have shown that…Jay Prakash Singh, Jaswant·Jul 25, 2026SaveLearn
Optical Appearance of a Rotating Black Hole in Nonlinear Electrodynamics Surrounded by Thin Accretion DisksThis work investigates the optical appearance of a rotating black hole (BH) in nonlinear electrodynamics (NED) using two illumination models, namely a celestial sphere and a thin accretion disk. The…Abdul Malik Sultan, Manahil Ali, Muhammad Israr Aslam et al.·Jul 25, 2026SaveLearn
Qualitative Shadow Anomaly as a Smoking-gun Signature of NonmetricityIn general relativity and its metric-formalism extensions, the innermost stable circular orbit and the photon ring of a charged black hole contract as the charge increases. In this paper, we discover…Zi-Chao Lin, Hao Yu, Yu-Xiao Liu et al.·Jul 25, 2026SaveLearn