3256 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 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 presents novel analytical solutions to the Klein-Gordon equation for scalar particles in a black string spacetime immersed in anisotropic quintessence and a string cloud, utilizing Heun and Bessel equations to derive radial solutions across all relevant quintessence state parameters and identify constraints leading to spectral restrictions and dark phases.
This paper analytically calculates the scalar self-force, energy, and angular momentum fluxes for a particle in a slightly eccentric orbit around a Schwarzschild black hole up to 6PN order and fourth order in eccentricity, demonstrating perfect agreement with scalar-tensor theory results when the asymptotic scalar field is fixed to unity.
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 establishes a no-go theorem demonstrating that stationary and axisymmetric Carrollian black holes in dimensions greater than three are necessarily static, while highlighting that rotating solutions can exist in three dimensions via topological re-identification and that accelerating black holes remain possible in four dimensions.
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 investigates the quasinormal modes of various test fields around a black hole immersed in a galactic dark matter halo, concluding that the halo's influence on the ringing spectrum is negligible unless the dark matter density is extraordinarily high, thereby affirming the reliability of quasinormal modes as probes of black hole geometry even in galactic environments.
This paper proposes a real-valued $Spin(4)$ gauge theory of gravity in a fundamentally Euclidean spacetime, where a Cartan khronon field breaks space-time symmetry to generate temporality and explains dark matter phenomena through gravitational dynamics rather than new particles.
This paper proposes an observer-dependent geometric definition of conical deficits in spacetimes with NUT parameters, demonstrating that the perceived conicity along the symmetry axis varies with the choice of timelike Killing vector and challenging the standard interpretation of conicity differences as indicators of acceleration-induced strings or rods.
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.