3826 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.
This paper demonstrates that supertranslations, traditionally defined as asymptotic symmetries at spacetime boundaries, can be naturally extended into the bulk as coordinate-independent transitions between families of null hypersurfaces, unifying their realization across different scales and revealing a novel curvature-dependent gravitational wave memory effect with observable consequences for light propagation.
This paper presents a blinded mock data challenge demonstrating that three distinct public pipelines can efficiently and consistently process simulated third-generation gravitational wave catalogs to measure cosmological parameters via the spectral siren method, achieving percent-level precision on the Hubble constant and matter density without relying on external redshift information.
This paper presents an exact black hole solution immersed in a King (2,3,0) dark matter halo derived from Einstein's field equations, demonstrating that the surrounding halo significantly alters photon trajectories, gravitational lensing, quasinormal modes, and thermodynamic stability compared to the vacuum Schwarzschild case.
This paper introduces a novel Kerr-Hernquist black hole solution embedded in a dark matter halo and demonstrates that the halo preserves the hydrogen-like structure of quasibound states while significantly altering scalar cloud formation, instability growth rates, and superradiant amplification through density-dependent corrections.
This paper identifies a universal constraint on creating spatial superpositions of massive particles, demonstrating that momentum conservation inevitably entangles the particle with the preparation apparatus, thereby imposing strict limits on coherence based on the apparatus's mass, temperature, and anchoring that persist even for macroscopic devices.
This paper investigates rotating Einstein-Power-Yang-Mills black holes by deriving their Kerr-like metric, analyzing their shadows and quasinormal modes, and using Event Horizon Telescope observations of M87* and Sgr A* to constrain the Yang-Mills charge and power parameter, revealing that while the charge significantly affects shadow size and emission rates, its impact on quasinormal modes remains below current detection thresholds.
This paper investigates the repetitive Penrose process in rotating 4D Einstein-Gauss-Bonnet black holes, revealing that as the black hole mass decreases, the dimensionless Gauss-Bonnet coupling self-amplifies to contract the ergosphere and uniquely reorganize the energy efficiency landscape into a distinct multi-region structure not found in standard Kerr or charged black hole spacetimes.
This paper demonstrates that in the effective field theory of dark energy, the Vainshtein mechanism fails to screen the multipole moments of the fifth force for nonspherical sources, leading to characteristic oscillatory behavior in the gravitational potential even when the monopole component is screened.
This paper introduces *bilby_glitch*, a modular Bayesian framework for the simultaneous inference of gravitational-wave signals and noise glitches, demonstrating its effectiveness in reanalyzing events like GW191109 and GW200129 to reveal how the interplay between waveform approximants and glitch models significantly impacts astrophysical conclusions such as spin-precession evidence.
This paper proposes that the "Little Red Dots" observed by JWST are black holes seeded by dynamically assembled primordial black hole clusters, a scenario that predicts a distinct stochastic gravitational-wave background and resolvable merger events detectable by future observatories like LISA.