High-Post-Newtonian-Order Dynamics Induced by Tail-of-Tail Interactions: The Non-Geodesic TermsWe compute the tail-of-tail contribution to the conservative dynamics of eccentric, non-spinning compact binaries to relative 1PN order and to O(et12). Using the 1PN quasi-Keplerian…Geraint Pratten·Aug 5, 2026SaveLearn
The Magnusian generator for dissipative systems and application to leading 2.5PN radiation-reaction dynamicsThe Magnusian is a phase-space function that generates finite-time evolution through nested Poisson brackets. It is related to several familiar generators of classical dynamics, including the radial…Francisco M. Blanco·Aug 5, 2026SaveLearn
Precision Ringdown Measurements of Binary Black Hole RemnantsThe ringdown gravitational wave from a binary black hole (BBH) merger is a superposition of quasi-normal modes (QNMs) of the remnant black hole. In general relativity (GR), QNMs are damped harmonic…Achal Kumar, Poulami Dutta Roy, Marek J. Szczepańczyk et al.·Aug 5, 2026SaveLearn
A complete correspondence between the Newman-Penrose and 1+1+2 formalismsWe establish a correspondence between the Newman-Penrose and 1+1+2 semitetrad covariant formalisms by expressing all Newman-Penrose spin coefficients, Ricci scalars, and Weyl scalars in terms of the…Abbas M Sherif, Peter K S Dunsby·Aug 5, 2026SaveLearn
A covariant approach to the Dirac field in LRS space-times: the case of coplanar framesWe employ the polar decomposition of the Dirac field to describe it as an effective spinorial fluid. We then construct a (1+1+2) covariant formalism for the Dirac field that avoids the introduction…Stefano Vignolo, Giuseppe De Maria, Sante Carloni et al.·Aug 5, 2026SaveLearn
Fundamental Limits of Quantum Sensors for Gravitational Wave DetectionRecent advances in quantum sensing---optical clocks, frequency-dependent squeezing below the standard quantum limit, and quantum magnetometers---raise a natural question: can these technologies…Sergio Gaudio·Aug 5, 2026SaveLearn
Uncovering subdominant multipole asymmetries in binary black-hole mergersIn dynamically formed binaries, the spins of the black holes tend to be misaligned with the system's orbital angular momentum. This causes the spins to precess and leads to an asymmetric emission…Jannik Mielke, Angela Borchers, Frank Ohme·Aug 5, 2026SaveLearn
General relativistic limit of f(R) gravity in the horizon scale of black holeThe environment of the Galactic Centre (GC) black hole, Sgr A* gives us new opportunities to test black hole physics and deviation from General Relativity. In this analytical study we calculate null…Pranjali Bhattacharjee, Sanjeev Kalita, Debojit Paul et al.·Aug 5, 2026SaveLearn
Emergence of critical phenomena from the black hole interiorThe emergence of the r=0 singularity inside a spherically symmetric charged black hole, is studied numerically within the Einstein-Maxwell-real scalar model. When the scalar field reaches a…Caiying Shao, Junqi Guo, Yu Tian et al.·Aug 5, 2026SaveLearn
Geodesic completeness, curvature singularities and infinite tidal forcesWe report some new findings regarding the subtle relations among geodesic completeness, curvature singularities and tidal forces. It is well known that any particle may be torn up near a singularity…Xiaotian Zhang, Sijie Gao·Aug 5, 2026SaveLearn
Higher-Dimensional Cosmology in the Framework of Generalized Chaplygin Gas: An Approximation MethodWe present a higher-dimensional cosmological model with a generalized Chaplygin-type gas to explain the late-time acceleration of the Universe. The model admits dimensional reduction and reproduces…D. Panigrahi, B. C. Paul, S. Chatterjee·Aug 5, 2026SaveLearn
Bianchi-Type Black Holes in Higher-Dimensional R2 GravityIn this study, we investigate higher-dimensional static and stationary Bianchi-type solutions in an R2 gravity theory using the formalism of exterior differential forms. We construct a broad class…Seçil Şentorun·Aug 4, 2026SaveLearn
Thermodynamic Supercriticality and Complex Phase Diagram for Charged AdS Black Holes in Trace Anomaly GravityWe extend the Lee-Yang phase transition framework to charged anti-de Sitter (AdS) black holes in four-dimensional trace anomaly gravity. By treating the horizon radius as a complex variable, we…Minyan Ou, Xiangdong Zhang, Zhang-Yu Nie·Aug 4, 2026SaveLearn
Disformal Maps: Classification and Singular DynamicsBeing agnostic about the field content of a gravitational system, we consider a general disformal transformation of the metric, gμν=Chμν+Dtμν, on a four-dimensional Lorentzian manifold.…Mohammad Ali Gorji, Pavel Jiroušek, Alexander Vikman et al.·Aug 4, 2026SaveLearn
A Tale of Two Couplings: Bayesian Selection in the Interacting Dark SectorΛCDM provides a remarkably successful description of the Universe, yet it suffers from persistent discrepancies, with one of the most prominent being the σ8 tension between early-Universe Cosmic…Miguel Barroso Varela, Álvaro de la Cruz-Dombriz·Aug 4, 2026SaveLearn
Charged topological geons with a self-gravitating scalar fieldA topological geon is an asymptotically (anti-)de Sitter or flat spacetime with topology R× M, where M is the punctured projective space, M=RP3\p\, and the…Alexander Tsirulev·Aug 4, 2026SaveLearn
Semiclassical Black Hole-White Hole transitions: an analytical treatmentRecent numerical studies of semiclassical gravity suggest that, in spherically symmetric black holes with both outer and inner horizons, the semiclassical instability of the inner horizon can drive…Julio Arrechea, Stefano Liberati, Massimiliano Spadafora·Aug 4, 2026SaveLearn
New gravitational instanton: shadow of an extra dimensionWe present an exact gravitational instanton solution on a five-dimensional, conformally invariant, Kerr-like warped Riemannian brane-world manifold. The geometry can be described as the Kähler…Reinoud Jan Slagter·Aug 4, 2026SaveLearn
Global hyperbolicity meets order completenessRecently, an order completeness property has attracted attention in some low regularity spacetime geometry literature, where it was named `chronocompleteness'. In this work we prove that, in the…E. Minguzzi·Aug 4, 2026SaveLearn
From Størmer to Schwarzschild: Analytical Dynamics of Charged Particles in a Dipole MagnetosphereWe investigate the conservative dynamics of relativistic charged particles in a Schwarzschild spacetime threaded by an externally supported dipolar magnetic field. The gravitational sector is treated…Francisco S. N. Lobo, Tiberiu Harko·Aug 4, 2026SaveLearn
A generalization of the Fredenhagen-Haag derivation of Hawking radiation for a class of Vaidya space-timesWe develop a quantitative Fredenhagen--Haag like approach for describing Hawking radiation using massless scalar fields on controlled spherically symmetric Vaidya space-times. The local thermal…Felipe Dilho Alves·Aug 4, 2026SaveLearn
Self-Forces as Nonlocal Probes of Gravastar InteriorsCompact objects with the same exterior metric are locally indistinguishable to test particles, yet observables built from retarded fields can retain information about the spacetime outside the…Bokai Zhang, Yungui Gong·Aug 4, 2026SaveLearn
A wormhole with two black holesWe report on a new three-parameter stationary solution of the four-dimensional vacuum Einstein equations, which describes a Lorentzian wormhole harboring two antipodal co-rotating black holes. These…Gérard Clément·Aug 4, 2026SaveLearn
Axial Obstructions to Rotating Bumblebee Vacuum SolutionsWe establish two obstructions to globally regular rotating constant-norm vector vacua. At an axial fixed point of a regular nondegenerate bifurcate Killing horizon, horizon-boost and axial invariance…Minyong Guo, Zhong-Ying Fan·Aug 4, 2026SaveLearn
Quasibound states of a charged Dirac field around regular black holesCharged regular black holes can respond differently from Reissner--Nordström (RN) black holes to charged scalar perturbations, raising the question of whether their inner geometry also leaves a…Shao-Jun Zhang·Aug 4, 2026SaveLearn