Revisiting environmental effects on black hole quasibound-state spectra with relativistic perturbation theoryWe present a relativistic framework for computing corrections to the eigenfrequency spectrum of a massive scalar field in perturbed black-hole spacetimes, including first-order shifts to decay rates…Yin-Da Guo, Qi-Xuan Xu, Richard Brito et al.·Aug 15, 2026SaveLearn
On the physical origin of the radial acceleration relationThe radial acceleration relation (RAR) is a tight correlation between the distribution of baryonic matter in galaxies and their observed dynamics, even in systems where dark matter dominates. This…Gary Nash·Aug 14, 2026SaveLearn
Antipodal constraints on transient Hawking radiation in a conformal channelHawking radiation away from stationarity is governed, at the ray tracing level, by the retarded time evolution of the null mapping. We consider an extracted massless conformal channel whose outgoing…M. Baran Ökten, Aslı S. Turan·Aug 14, 2026SaveLearn
New metric useful for studies of gravitational radiation from accelerating black holes of type D with any cosmological constantWe apply a convenient parametrization of all Plebanski-Demianski black holes of algebraic type D with the Kerr rotation, NUT twist, acceleration, electric and magnetic charges, and any value of the…Jiri Podolsky·Aug 14, 2026SaveLearn
Riesz--Laurent representation of black-hole scattering and sourced response at exceptional pointsAt a black-hole exceptional point (EP), two quasinormal modes coalesce and their separate residues become ill-conditioned. Rather than postulating a near-degenerate modal fit, we derive the response…Okuto Morikawa, Shoya Ogawa, Takuya Hirose·Aug 14, 2026SaveLearn
C-infinity Compact-Support Wormholes with Exact Schwarzschild Exterior in Trace-Coupled GravityWe study static, spherically symmetric traversable wormholes in trace-coupled gravity with action density f(R,T) = R + lambda T2. The spacetime is built from C-infinity deformations of Schwarzschild…Mushtaq Ahmad, M. Farasat Shamir, Ahdab K. Althukair·Aug 14, 2026SaveLearn
Asymptotic flatness beyond General RelativityThe asymptotic symmetry group of asymptotically flat spacetimes gives rise to balance flux equations that constrain, fully non-perturbatively, the asymptotic strain measured by gravitational-wave…David Maibach·Aug 14, 2026SaveLearn
Radiative Matching Across a Projector BridgeTwo distinct Einstein--Hilbert sectors are related by a covariant correspondence bridge that maps stress-energy through bitensor kernels. The Bianchi identities enforce conservation, with bridge…Medeu E. Abishev, Daulet Z. Berkimbayev·Aug 13, 2026SaveLearn
Vector Perturbations in Ghost-Free Quasidilaton Massive GravityWe study transverse vector perturbations in ghost-free extended quasidilaton massive gravity without a quasidilaton kinetic term, in the presence of minimal matter. In vacuum, we recover the known…Ekapob Kulchoakrungsun, Daris Samart·Aug 13, 2026SaveLearn
Quadratic effective energy--momentum tensor on uniform-density hypersurfaces during slow-roll inflationWe investigate the quadratic-order effective energy--momentum tensor (2EMT) of scalar cosmological perturbations on uniform-density hypersurfaces during slow-roll inflation. The 2EMT is constructed…Inyong Cho·Aug 13, 2026SaveLearn
Quantum-Corrected Thermodynamics and Phase Structure of AdS Euler-Heisenberg Black HoleWe investigate the thermodynamic behaviour of an AdS black hole arising from nonlinear electrodynamics-corrected gravity, incorporating quantum effects through thermal fluctuations. From the…Siddhartha Sankar Borah, Dhruba Jyoti Gogoi, Kalyan Bhuyan·Aug 13, 2026SaveLearn
Differential Obstructions to Curvature-Dependent Conformal TransformationsCurvature-dependent conformal rules are local forward assignments on known metrics, but they are not generically local changes of metric variables. We study the nondegenerate class $…David S. Pereira, Francisco S. N. Lobo, José Pedro Mimoso·Aug 13, 2026SaveLearn
Gravitational Wave Standard Sirens as Probes of Lorentz Violation in Bumblebee GravityGravitational-wave standard sirens provide a direct measurement of luminosity distance and therefore offer a new way to test gravity over cosmological scales. We use this idea to forecast the…Ayan Banerjee, Bobur Turimov, Francisco Tello-Ortiz et al.·Aug 13, 2026SaveLearn
White dwarfs in minimal dilatonic gravityWe study static, spherically symmetric white dwarfs in minimal dilatonic gravity (MDG) -- a Brans-Dicke theory with fixed coupling α2=1/3 and free Compton length λΦ. Solving the full…Denitsa Staicova·Aug 13, 2026SaveLearn
Long-term 3+1 simulations of primordial black hole formation during radiation dominationWe develop an efficient three-dimensional numerical-relativity framework for primordial black-hole (PBH) formation from superhorizon curvature perturbations in a radiation-dominated Universe. We…Zhuan Ning, Rong-Gen Cai, Shao-Jiang Wang et al.·Aug 13, 2026SaveLearn
Temperature effects on white dwarfs in modified gravityIn this article we analyze the effects of a finite temperature equation of state on the equilibrium structure of white dwarfs in massive Brans-Dicke theory as well as the symmetron and dilaton…Sofía Vidal, Aneta Wojnar, Laur Järv·Aug 13, 2026SaveLearn
Reeb-Wolf Improved Landauer Principle for Hairy Black Holes via Gravitational DecouplingWe investigated the thermodynamic and quantum-information cost of irreversible information erasure at the event horizon of hairy black holes generated through extended geometric deformation. Starting…J. Andrade, J. O. Cedeño, M. Zeeshan Gul et al.·Aug 13, 2026SaveLearn
A Minkowski-core black hole with cosmological constant and electric chargeWithin a covariant effective Hamiltonian framework, we employ an inverse construction to derive the gravitational Hamiltonian constraint for a Minkowski-core regular black hole without invoking…Wen-Zheng Chen, Shulan Li, Jian-Pin Wu et al.·Aug 13, 2026SaveLearn
Cosmological Vacuum Decays from Schwinger-Keldysh FormalismIn this work, we establish a systematic framework to describe the vacuum decays in a radiation-dominated FLRW universe from the Schwinger-Keldysh formalism. By splitting the phase transition field…Zi-Yan Yuwen·Aug 13, 2026SaveLearn
Regular Black Holes from Collapsing Dust in a Dark Energy BackgroundThe central singularity in gravitational collapse represents a fundamental breakdown of classical general relativity, yet its resolution remains an open challenge. While conventional regular black…Qazi Abdul Ghafoor·Aug 12, 2026SaveLearn
Horizon-regular cross-focusing and inner-horizon obstructions in spherical f(R) gravityWe formulate a horizon-regular double-null criterion for regular inner marginal horizons in spherically symmetric metric f(R) gravity. Using normalized outgoing and ingoing radial null vectors…Maickol Muñoz-Palma, Francisco S. N. Lobo, Jean Báez Cuevas et al.·Aug 12, 2026SaveLearn
Quasitopological Gravity with Matter: Modified Double-Copy ApproachWe extend the recently proposed modified double-copy formalism to quasitopological gravity (QTG) coupled to matter. For spherically symmetric configurations, the QTG field equations in…Valeri P. Frolov·Aug 12, 2026SaveLearn
Two-scale magnetically charged regular black holes from nonlinear electrodynamics and a T-duality-inspired zero-point lengthWe construct a two-scale, static, spherically symmetric regular black hole in Einstein gravity sourced by magnetic nonlinear electrodynamics (NED). The zero-point length regularizes the mass…Ali Ovgun, Reggie C. Pantig, Joel Saavedra·Aug 12, 2026SaveLearn
Probing the Distribution and Nature of Dark Matter Around Supermassive Black Holes from EMRI and IMRI Gravitational WavesThe distribution of dark matter in the immediate vicinity of supermassive black holes remains poorly understood despite its importance for galaxy evolution and precision tests of gravity. Future…Jared Fier, Farah Abdelshahed, Lilly Kowalczyk et al.·Aug 12, 2026SaveLearn
Dymnikova Black Hole Tidal ForcesIn this work we investigate the tidal properties of the Dymnikova regular black hole and their ef fects on massive particles in radial free-fall. Starting from Dymnikova static, spherically symmetric…M. H. Macêdo, A. A. M. Silva, R. R. Landim·Aug 12, 2026SaveLearn