3875 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.
The paper demonstrates that near-extremal charged black holes can suppress or even eliminate the decoherence of charged particle superpositions at late times due to a spin-induced energy gap in the quantum black hole spectrum, thereby enhancing quantum coherence beyond semiclassical expectations.
This paper demonstrates that accurately determining the end of inflation and incorporating higher-order slow-roll corrections within a quantitative reheating framework induces significant shifts in the predicted scalar spectral index () for the Starobinsky model, highlighting the necessity of precise end-of-inflation dynamics for future precision cosmology and model discrimination.
Using Bayesian analysis on one year of realistic LISA spacecraft orbits, this study demonstrates that space-based gravitational wave detectors can successfully distinguish signals from scalar ultralight dark matter, which induce oscillatory test mass motion, from those caused by quasi-monochromatic gravitational waves.
This paper proposes that regular primordial black holes can evaporate completely without forming exotic remnants by redefining their regularization parameters, thereby providing a unified framework to resolve both the black hole singularity problem and the dark matter abundance through modified Hawking evaporation dynamics.
This paper proposes that the gravitational wave event GW231123, previously interpreted as a single massive black hole merger, is more likely the result of two overlapping signals—potentially caused by gravitational lensing—which resolves significant discrepancies in source property measurements across different waveform models.
This paper demonstrates that using the HETDEX spectroscopic survey to obtain precise redshifts for both rare "golden" and common "silver" dark sirens from the upgraded LIGO network could enable a few-percent measurement of the Hubble constant, offering a critical independent path to resolving the Hubble tension.
This paper proposes a holographic definition of thermodynamic pressure and volume for black holes based on quasi-local gravitational thermodynamics, demonstrating that this framework allows for a consistent definition of extensivity and a large-system limit where both Schwarzschild and Anti-de-Sitter black holes transition from non-extensive to extensive behavior.
This study utilizes the relativistic orbit of the S2 star and Event Horizon Telescope shadow constraints to test various spacetime geometries around Sgr A*, finding that current data cannot statistically distinguish between Schwarzschild, Reissner-Nordström, and Bardeen black holes while providing limits on alternative parameters and identifying targets for future high-precision observations.
This paper presents a relativistic framework for extended spherically symmetric bodies that reproduces standard General Relativity tests while predicting weak, distance-dependent corrections to the external gravitational field based on internal mass distribution, which significantly affect light-velocity structures near neutron stars and measurable light travel times for Earth-orbiting satellites.
This paper investigates the thermodynamic properties, topological classification, and astrophysical signatures—including photon polarization effects, black hole shadows, and accretion disk emissions—of charged black holes modified by Weyl corrections to spacetime curvature.