3949 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 presents a global dynamical systems analysis of quadratic cosmology with a perfect fluid in spatially flat models, comparing the Jordan and Einstein frames to characterize orbit structures, desingularize fixed points, and identify which solutions are globally conformally mapped between the two frames.
This paper presents a fully covariant derivation of the classical log soft graviton theorem using Einstein equations and matching conditions across timelike, spatial, and null infinity, demonstrating that the asymmetry between future and past hard components arises from a discontinuity in the gravitational field at spatial infinity.
This paper develops a covariant formulation of the strong deflection limit for massive particles in static, spherically symmetric spacetimes, demonstrating that the logarithmic divergence of the deflection angle is governed by the radial instability exponent of the critical orbit, which can be expressed geometrically through local curvature data and matter properties.
This paper derives a closed-form analytic expression showing that the interaction between a static point mass supported by a string and Hawking radiation gravitons yields a finite response rate in the Unruh state due to the black hole's size acting as an infrared cutoff, while the response in the Hartle-Hawking state vanishes, resulting in identical total rates for both states unlike the case for massless scalar fields.
This paper proposes a microscopic explanation for the statistical entropy of general observed 4D black holes by compactifying 5D Einstein gravity with a positive cosmological constant, successfully deriving the Bekenstein-Hawking area term along with novel, physically significant sub-leading exponential corrections independent of specific black hole symmetries or supersymmetry.
This paper establishes new mean curvature rigidity theorems for spin fill-ins with non-negative scalar curvature by employing two distinct spinorial techniques—an APS boundary value problem extension and an index-theoretic comparison—to resolve questions posed by Miao and Gromov, while also deriving a novel Witten-type mass inequality for asymptotically Schwarzschild manifolds.
This paper theoretically investigates the light deflection caused by a topologically charged Holonomy corrected Schwarzschild black hole in both weak and strong field limits, deriving analytical expansions and observables to facilitate the identification of these solutions through gravitational lensing observations.
This study investigates how incorporating higher-order post-Newtonian tidal corrections up to 7.5 pN affects the measurement accuracy of neutron star tidal deformability using the Fisher Matrix method, revealing that these corrections do not exhibit convergence behavior and that measurement precision improves with higher effective spin and stiffer equations of state.
This paper analyzes the morphology and macroscopic observables of rotating relativistic kinetic gas clouds surrounding a Schwarzschild black hole, comparing configurations with and without total angular momentum using a polytropic ansatz for the one-particle distribution function.
The paper proposes CHRONOS, a next-generation ground-based gravitational-wave detector utilizing a ring-cavity Sagnac interferometer with torsion-bar test masses and quantum nondemolition speed-meter readout to achieve unprecedented sensitivity in the unexplored 0.1–10 Hz band, thereby enabling the detection of intermediate-mass black hole binaries, probing the stochastic gravitational-wave background, and performing quantum-limited geophysical observations.