⚛️ Category

gr-qc

3773 papers

Quantum gravity represents the frontier where the very large meets the very small, attempting to unify Einstein's theory of gravity with the strange rules of quantum mechanics. This field explores the fundamental fabric of spacetime, seeking to understand how the universe behaves at its most extreme scales, from the heart of black holes to the moment of the Big Bang. Because these concepts often involve complex mathematics, they can feel distant to non-specialists, yet they hold the key to a complete picture of physical reality.

At Gist.Science, we bridge this gap by processing every new preprint in this category directly from arXiv. Our team provides both plain-language explanations and detailed technical summaries for each paper, ensuring that groundbreaking research is accessible to everyone, from curious students to seasoned researchers. Below are the latest papers in quantum gravity, offering fresh insights into the nature of our cosmos.

⚛️ general relativity

Screened Scalar Hair and the Weak-Lensing Separation of Black Holes from Neutron Stars in Quadratic f(R)f(R) Gravity

This paper demonstrates that in quadratic f(R)f(R) gravity, the Yukawa-screened scalaron field renders black holes indistinguishable from general relativity while endowing neutron stars with a pressure-dependent scalar charge, thereby enabling weak lensing observations—particularly of the photon sphere—to effectively discriminate between these compact objects despite the scalar field's non-analytic and isotropic nature.

Yashmitha Kumaran, Ilídio Lopes2026-09-07
⚛️ general relativity

Exact solution of the Klein-Gordon equation in a Kiselev black hole background

This paper presents an exact solution to the Klein-Gordon equation for a relativistic spinless particle in a Kiselev black hole background, demonstrating that the surrounding quintessence-like anisotropic fluid reduces Hawking radiation and modifies the black hole's temperature while recovering the standard Schwarzschild results in its absence.

Matheus. D. de Oliveira, Alexandre G. M. Schmidt2026-09-07
⚛️ general relativity

Static Spherically Symmetric Solutions in Modified Entropic Gravity

This paper derives static, spherically symmetric solutions in modified entropic gravity by incorporating temperature-dependent corrections to the equipartition law, revealing that slight deviations from a quadratic temperature dependence yield a logarithmic correction to the gravitational potential that could explain anomalies in weak-field regimes.

A. Rostami, M. Rostampour, A. Yarahmadi, K. Rezazadeh2026-09-07
⚛️ general relativity

Expanding the scope of dark siren cosmology: Inferring the population properties of gravitational wave-hosting galaxies

This paper introduces an innovative methodology using a sampled redshift prior within the gwcosmo framework to jointly infer cosmological parameters and the previously unknown host galaxy weighting model from incomplete galaxy catalogues, yielding an updated Hubble constant measurement of H0=71.9−7.5+9.1H_0 = 71.9^{+9.1}_{-7.5} km s−1^{-1} Mpc−1^{-1} and addressing key challenges in dark siren cosmology.

Rachel Gray, Daniel Williams, Alexander Papadopoulos2026-09-07
⚛️ general relativity

Probing Dark Matter with Strongly Lensed Binary Black Hole Mergers: Prospects in the Near Future

This paper forecasts that upcoming observations from the upgraded LIGO-Virgo-KAGRA network, particularly by the sixth observing run (O6), will enable competitive constraints on the mass of warm dark matter particles using strongly lensed binary black hole mergers, offering a complementary and independent probe to existing astrophysical methods.

Koustav N. Maity, Souvik Jana, Ankur Barsode, Tejaswi Venumadhav, Parameswaran Ajith2026-09-07
⚛️ general relativity

Spherically symmetric inextendibility of weak null singularities with Christoffel symbols in LlocsL^s_{\text{loc}}

Motivated by the strong cosmic censorship conjecture, this paper proves the inextendibility of spherically symmetric weak null singularities as Lorentzian manifolds with continuous metrics and Christoffel symbols in LlocsL^s_{\text{loc}} (s>1s>1), demonstrating that this result applies to Reissner-Nordström-Vaidya spacetime and generic perturbations of subextremal Reissner-Nordström under the Einstein-Maxwell-scalar field system.

Peter Cameron, Jan Sbierski2026-09-07
⚛️ general relativity

Electromagnetic alignment and jet precession around supermassive black holes: Quasi-periodic oscillations in tidal disruption events

This paper proposes an analytical model for quasi-periodic oscillations in tidal disruption events, demonstrating how electromagnetic back-reaction induces retrograde precession of a mini-disk that couples with Lense-Thirring effects to drive jet precession, thereby generating observable flux modulations and frequency drifts that allow for the direct extraction of black hole spin and magnetic flux density.

Pau Amaro-Seoane, Leif Lui, Alejandro Torres-Orjuela, Xian Chen2026-09-07