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 soothing, low-frequency audio representation of the Universe, generated by averaging gravitational-wave signals from approximately one million synthetic compact binary coalescence events expected in 2026.
This paper utilizes a combination of "magnetic" and "electric" Ehlers-Harrison transformations on a Minkowski seed to derive a new type D electromagnetic swirling universe and four novel asymptotically nonflat type I spacetimes, providing detailed geometric analyses, singularity checks, and connections to known solutions like the Melvin and Reissner-Nordström-NUT metrics.
This paper investigates non-singular cosmological bouncing solutions in higher-order torsion gravity by reconstructing the gravitational Lagrangian for five distinct bounce scenarios across various matter phases, demonstrating that these models naturally satisfy observational constraints and avoid singularities through geometric mechanisms that violate the null energy condition without requiring ad hoc matter fields.
This paper defines Carrollian black holes as the limit of Schwarzschild-(A)dS and Schwarzschild-Bach-(A)dS spacetimes, revealing that massive particles exhibit finite or infinite windings near the extremal surface depending on the theory, while the resulting thermodynamics resemble an incompressible system with divergent entropy and a variable specific heat at zero temperature.
This paper demonstrates that the spherically symmetric collapse of a uniform dust star in Quadratic Gravity inevitably leads to horizon formation and a singularity that forms faster than in General Relativity, despite the theory's rich phase space of static solutions.
This paper proposes that the Starobinsky inflation model generates a unique, high-frequency stochastic gravitational wave background during reheating via scalaron decay, which could be detected through resonant cavity searches for graviton-to-photon conversions, thereby offering a novel experimental test for the theory.
This paper investigates gravitational wave signals in a non-supersymmetric SO(10) grand unified model, demonstrating that the first step of symmetry breaking can induce a first-order phase transition producing a detectable background, though current experimental sensitivity remains insufficient for observation.
This paper presents a machine learning framework that utilizes Gaia DR3 data and supervised learning techniques to efficiently detect and classify wide binary star systems with high accuracy, offering a scalable tool for future astrophysical research.
This paper corrects a previous error regarding the lower bound on the Brans-Dicke coupling parameter in generalized Brans-Dicke- theories by reanalyzing gravitational radiation data from the binary system PSR J1012+5307, thereby establishing revised constraints that highlight the distinct role of in the presence of both massless and massive scalar fields.
Motivated by the Hubble tension, this study utilizes DESI DR2 and ACT DR6 data to constrain the varying electron mass and early dark energy models, finding a slight preference for a varying electron mass while ruling out significant early dark energy contributions, and subsequently identifying distinct inflationary scenarios favored by each model.