2615 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 introducing a left confining potential in Jackiw-Teitelboim gravity not only restores the required discrete spectral statistics to resolve the black hole entropy paradox but also dynamically prevents the indefinite growth of wormhole length, thereby resolving the black hole singularity.
This paper validates a modified Teukolsky framework for predicting gravitational-wave ringdown spectra in effective field theories by successfully passing two rigorous null tests and confirming consistency between two independent numerical methods, thereby establishing its reliability for future strong-field tests of General Relativity.
This paper demonstrates that while advanced quantum sensors cannot directly detect gravitational waves via internal atomic or center-of-mass coupling due to negligible signal gains, they can still enhance existing laser and atom interferometers by factors of 1.04 to 2.4 by exploiting the light-propagation coupling mechanism and addressing specific noise limitations.
This paper investigates the constraint analysis and quantization of two-dimensional Thomas-Whitehead gravity using dynamical light-cone and ADM formalisms, demonstrating that introducing dynamics to the diffeomorphism field resolves the issue of vanishing Hamiltonians inherent in the standard effective Polyakov action.
This paper derives exact analytical solutions for static, spherically symmetric black holes in a Kalb-Ramond gravity background coupled with anisotropic fluids, analyzing their singularity structure, energy conditions, and optical properties—including photon spheres, shadows, and light deflection angles—to identify observable signatures that distinguish these string-inspired models from standard Schwarzschild geometries.
This paper investigates general black hole solutions in dimensionally reduced five-dimensional Einstein-Gauss-Bonnet gravity, revealing that the resulting theory with nonlinear corrections and nontrivial couplings exhibits unique features such as extremal mass in neutral cases and nonvanishing temperature and entropy for extremal black holes, distinguishing it from standard Kaluza-Klein theory.
This paper investigates the Little Rip dark energy model as a potential solution to the and cosmological tensions using recent observational data, including DESI-DR2, and finds that while the model reduces the Hubble tension to below with early-universe data, Bayesian evidence indicates it only provides a statistically improved fit for CMB data compared to the standard CDM model.
This paper investigates static, circularly symmetric black hole solutions in (2+1)-dimensional symmetric teleparallel gravity, deriving exact metrics for charged and uncharged cases to analyze their enhanced singularities, horizon dynamics, topological properties, and thermodynamic stability.
This paper introduces a covariant rank-4 tensor gauge field theory that naturally generates fractonic string excitations and a novel generalized dipole conservation law through symmetry principles, while also revealing a deep connection to linearized area-metric gravity.
This paper presents a comprehensive calculation of the full retarded Green functions for gravitational perturbations in Schwarzschild spacetime along both circular geodesic and static worldlines, revealing a distinct 4-fold singularity structure away from caustics and unique physical oscillations near singularities that differentiate the gravitational case from scalar field perturbations.