Using horizon shadows to distinguish a black hole and a white holeWithin theoretical frameworks such as loop quantum gravity, black holes may evolve into white holes through a quantum bounce. This paper uses general relativistic ray-tracing techniques to calculate…Chengyu Bi, Zhoujian Cao·Jul 23, 2026SaveLearn
Graviton-induced which-path decoherence in matter-wave interferometryWe derive which-path decoherence for matter-wave interferometry that arises from tracing out the gravitons of linearized quantum gravity. Because the gravitons are driven linearly by the matter…Hiroki Matsui·Jul 23, 2026SaveLearn
Static spheres in black hole spacetimes: pairing, energy conditions, and an upper bound on the innermost radiusIn this work, we investigate the existence, relation to the energy conditions, and radial bounds of static spheres in general static, spherically symmetric, asymptotically flat black hole spacetimes.…Yong Song·Jul 23, 2026SaveLearn
Multi-Spin Perturbations, Thermodynamics, and Observational Signatures of Reissner-Nordstrom Black Holes in Bumblebee GravityIn this paper, we present a comprehensive investigation into the dynamical and thermodynamic properties of the charged Reissner-Nordström (RN) black hole (BH) in the bumblebee gravity framework,…Jayasri Choudhury, Yenshembam Priyobarta Singh, Dhruba Jyoti Gogoi et al.·Jul 23, 2026SaveLearn
Reconstructions of Horndeski Subclasses by Gaussian ProcessesIn this work we reconstruct two subclasses of theories from the Horndeski class, the most general scalar-tensor theories of gravity with second-order equations, according to a variety of…Marco C. Mendoza Marcos, Ana A. Avilez Lopez·Jul 23, 2026SaveLearn
Binary Black Hole Coalescence and the Dynamics of Scalar Hair in Einstein-Maxwell-Scalar TheoryWe investigate the head-on coalescence of charged binary black holes in Einstein-Maxwell-Scalar (EMS) theory using numerical relativity. The binaries are built from charged puncture initial data…Jean Pierre Díaz, P. A. González, Eleftherios Papantonopoulos et al.·Jul 23, 2026SaveLearn
Regular spherically symmetric solutions in General Relativity and scalar-tensor gravity coupled to nonlinear electrodynamics and their stabilityWe investigate the geometric, dynamical, and thermodynamic properties of a novel class of regular black holes in scalar-tensor gravity non-minimally coupled to nonlinear electrodynamics (NED). By…Rustam Ibadov, Najibullokhon Shukurullokhon·Jul 23, 2026SaveLearn
Poincaré asymptotic expansion in black hole theoryIn studying the dynamics of fields in black hole theory, the method of separation of variables makes it possible to isolate the radial part of the full solution in many important physical cases. This…Giampiero Esposito, Marco Refuto·Jul 23, 2026SaveLearn
Gauge-covariant Hamilton equations for teleparallel equivalents of general relativityWe construct a gauge-covariant Hamiltonian formulation for the metric and symmetric teleparallel equivalents of general relativity. When treating torsion and nonmetricity as generalized velocities,…David Chester, Vipul Pandey·Jul 23, 2026SaveLearn
Unimodular quantum cosmology in the connection representation: A minimal modelWe present a quantization of unimodular gravity in the connection representation for a homogeneous, isotropic, and spatially flat cosmological model without matter. In this model, the wave function…Shinji Yamashita·Jul 23, 2026SaveLearn
On the Possibility of Quantum Gravity Emerging from GeometryCan the generalized uncertainty principle (GUP) arise as an effective manifestation of spacetime geometry rather than as a fundamental postulate? More specifically, can the gravitational GUP be…Jaume Gine·Jul 23, 2026SaveLearn
The emergence of the universeWe show how our Universe can emerge from a symmetry breaking of a multicomponent W3 algebra, where the components in addition form a Jordan algebra. We discuss how symmetry breaking related to the…Jan Ambjorn, Yoshiyuki Watabiki·Jul 23, 2026SaveLearn
Hubble Tension and Dark Energy in Teleparallel Gauss-Bonnet Gravity: New Constraints from DESI BAO, Pantheon+ and Hubble DataWe explore the cosmological dynamics of a teleparallel Gauss-Bonnet gravity model defined by the torsion scalar T and the torsion-based Gauss-Bonnet invariant TG, deriving modified…Santosh V. Lohakare, S. K. Maurya, Aaisha Al Qassabi et al.·Jul 23, 2026SaveLearn
Spherically symmetric solutions in quasi-local Einstein-Weyl gravityQuantum-gravitational effective actions with higher-derivative and non-local operators are expected to regularize the singularities of general relativity. Here we focus on quasi-local Einstein-Weyl…Johanna Borissova, Breno L. Giacchini, Aaron Held·Jul 23, 2026SaveLearn
LQG-modified dispersion relations and the problem of cosmic photons threshold anomaliesOur present contribution sets out to investigate how combined effects of Lorentz invariance violation (LIV) and loop quantum gravity (LQG)-modified photon dispersion relations affect the threshold…P. A. L. Mourão, G. L. L. W. Levy, J. A. Helayël-Neto·Jul 23, 2026SaveLearn
Fermionic Signatures of Antispacetime-spacetime Domain WallsAntispacetime arises naturally in the vielbein formulation of general relativity yet remains invisible to probes coupling only to the metric. We show that domain walls separating spacetime from…Justine Charles A. Elveña, Kristian Hauser Villegas·Jul 22, 2026SaveLearn
Thermodynamics of boosted Schwarzschild black holesThe equilibrium thermodynamics of boosted Schwarzschild black holes is worked out in a concise way and shown to agree with expectations from relativistic thermodynamics.Glenn Barnich·Jul 22, 2026SaveLearn
Evolving Dark Energy from the Back-Reaction of Cosmological PerturbationsWe argue that the back-reaction of inhomogeneities, when combined with a pure cosmological constant, produces an effective dark energy whose equation of state can evolve with time. Our analytical…Vincent Comeau·Jul 22, 2026SaveLearn
Gravitational Wave Birefringence in generalized Palatini Chern SimonsThe cosmological propagation of gravitational waves (GWs) can exhibit amplitude and phase polarization distortions when parity symmetry is broken, a phenomenon known as cosmological birefringence. In…Jose Perdiguero, Macarena Lagos·Jul 22, 2026SaveLearn
A product template bank to search for compact binary coalescences microlensed by isolated point mass lensesGravitational waves (GW) from stellar mass compact binary coalescences (CBCs) that encounter a lens whose Schwarzschild radius is comparable to the GW wavelength, will be microlensed, leading to…Sudhir Gholap, Sanjeev V. Dhurandhar, Shasvath J. Kapadia·Jul 22, 2026SaveLearn
Cosmological Inflation in f(R,T) Gravity with Chern-Simons CorrectionWe investigate cosmological inflation within the framework of a linear form of f (R, T ) gravity that incorporates an inflaton scalar field augmented by a Chern-Simons correction induced by aspects…Maryam Shiravand, Saeed Fakhry, Mehrdad Farhoudi·Jul 22, 2026SaveLearn
Black hole-neutron star binaries with high spins and large mass asymmetries: III. Properties of the ejected material and its electromagnetic signaturesCompact binary systems consisting of a black hole (BH) and a neutron star (NS) are expected to provide detectable signals both in the gravitational wave and in the electromagnetic channels, thus…Konrad Topolski, Samuel D. Tootle, Paramvir Singh et al.·Jul 22, 2026SaveLearn
Unstable de Sitter inflationary solution in sixth-order gravityA sixth-order gravity, which involves not only two leading terms, γ1 R R and γ2 Rμν Rμν, but also quadratic curvature terms along with cubic curvature ones, will be investigated…Tuan Q. Do·Jul 22, 2026SaveLearn
Eikonal Quality-Factor Parameterization of Model-Conditional Static Black-Hole ThermodynamicsWe study how one complex quasinormal frequency can parameterize the geometry and model-conditional thermodynamics of a prescribed family of static, spherically symmetric black holes. For a minimally…Nikko John Leo S. Lobos, Emmanuel T. Rodulfo·Jul 22, 2026SaveLearn
Critical analysis of some weak-field Weyl conformal gravity solutionsThe field equations of Conformal Gravity (CG) are constructed from fourth-order derivatives of the metric. While the second-order field equations of General Relativity (GR) reduce to a second-order…Miguel Yulo Asuncion, Reinosuke Kusano·Jul 22, 2026SaveLearn