Emergence of Kastor-Traschen spacetime from a nonlinear Dirac systemWe establish a uniqueness theorem in four-dimensional spacetime, demonstrating that a nonlinear spinor system naturally constrains the background geometry to the Kastor-Traschen spacetime, which…Daisuke Ida·Aug 25, 2026SaveLearn
Classification of Maximally Charged Black HolesWe characterize all maximally charged black hole spacetimes in 3+1 dimensions. More precisely, given any initial data set (M,g,k) saturating the mass-charge inequality that satisfies the charged…Sven Hirsch, Yiyue Zhang·Aug 25, 2026SaveLearn
Dynamical Friction as Environmental Gravitational Self-ForceDynamical friction (DF) and gravitational-wave radiation reaction are conventionally treated as distinct dissipative mechanisms acting on a compact object inspiraling through a matter environment. We…Sayak Datta·Aug 25, 2026SaveLearn
Gravitational Lensing of Gravitational Wave for Generalized Navarro-Frenk-White Profile and Einasto ProfileThe density profiles of Dark matter (DM) halos carry imprints of the DM nature and may be constrained through the lensing effects on gravitational waves (GWs) arising from the halo gravitational…Hanyu Jiang, Xiao Guo, Youjun Lu et al.·Aug 25, 2026SaveLearn
Unsupervised Deep Learning Method for Clustering KAGRA O3GK Transient Noise DataThe advent of ground-based gravitational wave detectors has significantly improved the detection of faint gravitational wave signals. However, these detectors are affected by various types of…Yubin Kim, Kihyun Jung, Kyujin Kwak·Aug 25, 2026SaveLearn
Testing f(Q) Gravity with DESI DR2 and Strong-Lensing Time DelaysSymmetric teleparallel gravity provides an alternative description of gravitation in which non-metricity replaces curvature and torsion. Its extension through f(Q) gravity offers a different…Darshan Kumar, Saibal Ray, Fengge Zhang et al.·Aug 25, 2026SaveLearn
Inhomogeneous Cosmologies with Bumpy Structure from Superfluid Pionic Vortices and the propagation of electromagnetic fieldIn this work we introduce exact cosmological solutions in General Relativity in (3+1) dimensions which take into account both the usual fluid component as well as a superfluid component describing…Fabrizio Canfora, Alex Giacomini, Nikolaos Dimakis et al.·Aug 25, 2026SaveLearn
Global uniqueness of Kerr black hole spin and inclination from a segment of the critical curveHigh-resolution observations are expected to probe the photon-ring structure of black hole images. The critical curve is the geometrically defined limiting locus on the observer's screen toward…Kenta Hioki·Aug 25, 2026SaveLearn
The Bondi Dipole in Full Numerical Relativity: a Self-Accelerating Positive-Negative Mass BinaryBondi showed in 1957 that bodies of opposite active gravitational mass self-accelerate: the negative chases the positive it repels, and the pair runs off together. We evolve this "Bondi…Nikita M. Shirokov·Aug 25, 2026SaveLearn
Revisit Weak Cosmic Censorship in Einstein-Maxwell-Dilaton Black Holes: Third-order Protection, Swampland Distance Conjecture, and Weak Gravity ConjecturesWe extend the earlier analysis of cosmic censorship and the Weak Gravity Conjecture (WGC) in Einstein--Maxwell-dilaton (EMD) theory by performing a complete higher-order Sorce--Wald…Sheng-Hong Lai, Wen-Yu Wen·Aug 25, 2026SaveLearn
Efficient time-domain eccentric model for Galactic binaries in LISAGalactic binaries are expected to be the most numerous long-lived sources in the Laser Interferometer Space Antenna (LISA) data stream and are commonly modeled as quasi-circular, nearly monochromatic…Shubhanshu Tiwari, Johan O. A. Robertsson, A. Gopakumar et al.·Aug 25, 2026SaveLearn
Non-minimally coupled Weyl connection gravity in the Solar System and at the Galactic CenterWe explore the phenomenological viability of non-minimally coupled Weyl connection gravity by confronting its static, spherically symmetric black hole solutions with classical weak-field Solar System…Mohsen Khodadi, Margarida Lima, Cláudio Gomes·Aug 25, 2026SaveLearn
Towards a Connection Formulation of Action-Dependent Palatini GravityPrevious work has shown that first-order Palatini gravity may be cast as a non-conservative Herglotz Lagrangian field theory, which excludes the conformal mode from its space of dynamical variables.…Callum Bell, David Sloan·Aug 25, 2026SaveLearn
Thermodynamics, Joule-Thomson Expansion and Ruppeiner Geometry of a Dyonic NED-AdS Black Hole Surrounded by QuintessenceWe investigate the thermodynamic properties, Joule-Thomson expansion, and microscopic structure of a dyonic Reissner-Nordström-AdS black hole in nonlinear electrodynamics surrounded by quintessence.…Djedai Ayang Kamo, Saleh Mahamat, Ragil Brand Tsafack Ndongmo et al.·Aug 25, 2026SaveLearn
Traversable wormholes in f(T,τ) gravity: a complete classification of the non-exotic sectorWe study static and spherically symmetric traversable wormholes in f(T,τ) gravity, where the torsion scalar T is coupled to the trace τ of the matter energy--momentum tensor. We consider the…Ayan Banerjee, Takol Tangphati, Safiqul Islam et al.·Aug 25, 2026SaveLearn
Reconstruction of the Weyl-Lewis-Papapetrou metric for stationary and axially symmetric gravitational perturbations of a Kerr black holeThe study of black hole perturbations typically follows two main approaches: the direct perturbation of the metric, or the perturbation within the Newman-Penrose (NP) or Geroch-Held-Penrose (GHP)…David Kofroň, Petr Kotlařík·Aug 25, 2026SaveLearn
Gravitational Wave Parity-Violating Strain from Pulsar Glitches in Chern-Simons Modified GravityWe investigate gravitational-wave birefringence from pulsar glitches in dynamical Chern-Simons gravity, a parity-violating extension of general relativity motivated by string theory and quantum…Abhishek Rout, Brett Altschul·Aug 25, 2026SaveLearn
Cosmological Evolution of the Higgs Vacuum Expectation Value in Emergent GravityIn a generally covariant theory whose Lagrangian density contains no derivatives of the metric, the spacetime geometry is fixed algebraically by the scalar fields, and the simplest quadratic…Nazim Ruzgar Guneri, Metin Arik·Aug 24, 2026SaveLearn
Amplification of metric perturbations by extremal horizonsUnder normal circumstances, an observer falling into a black hole feels nothing special upon crossing the horizon. In this paper we find an intriguing exception: For most of the parameter range of…Samuel E. Gralla, Sepehr Salamat·Aug 24, 2026SaveLearn
Exploring a phantom Dirac-Born-Infeld regular black hole via particle emission, wave scattering and geodesicsWe examine particle creation, evaporation, scalar wave absorption and scattering, and geodesic motion in the asymptotically flat regular black hole supported by a phantom Dirac-Born-Infeld field. For…N. Heidari, A. A. Araújo Filho, Iarley P. Lobo et al.·Aug 24, 2026SaveLearn
Defining higher memory signals and forecasting their observation prospects for binary-black-hole mergers with next-generation gravitational-wave detectorsIn asymptotically flat spacetimes far from an isolated source, gravitational waves (GWs) undergo nonlinear interactions with themselves and with the parts of the spacetime curvature related to the…Siddhant Siddhant, Alexander M. Grant, David A. Nichols·Aug 24, 2026SaveLearn
Primordial spectra from modified Bekenstein-Hawking entropy lawMany approaches to quantum gravity predict logarithmic corrections to the Bekenstein-Hawking entropy. Within the spacetime-thermodynamic description of gravity, such corrections lead to modified…Marco de Cesare, Giulia Gubitosi, Varun Kushwaha·Aug 24, 2026SaveLearn
Brans Dicke scalar-tensor gravity and unimodular FRW cosmology with Coleman-Weinberg potentialAs alternative gravity theories with respect to the general relativity, the Brans-Dicke (BD) scalar tensor model is well known for which the BD parameter is controller the best fit observational data…Manda Malekpour, Hossein Ghaffarnejad·Aug 24, 2026SaveLearn
From arithmetic spectra to a quantum-corrected black hole geometryThe Euler product of the Riemann zeta function is the partition function of a free bosonic gas whose mode energies are the logarithms of the primes. We show that this arithmetic gas, combined with…Kimet Jusufi, Ankit Anand·Aug 24, 2026SaveLearn
Dynamical Love numbers of analogue rotating black and white holesWe calculate the dynamical tidal response coefficients (TRCs) of 2+1D analogue black and white holes generated by draining and fountaining bathtub flows, respectively. The parameter space is…Satadal Datta, Wei-Can Syu, Da-Shin Lee·Aug 24, 2026SaveLearn