2693 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 non-perturbative worldline instanton analysis of vacuum decay in a Schwarzschild background that recovers a gauge theory color-thermal spectrum as a topological winding mode and demonstrates how the double copy maps this response to gravity while capturing universal non-linear backreaction corrections required for unitarity.
This paper reports the first experimental realization of multi-material dielectric mirror coatings optimized via a multi-objective algorithm to minimize thermal noise and optical losses, successfully validating the design pipeline with a SiNx system while identifying manufacturing process improvements needed for the Ti:GeO2 system to fully achieve its theoretical potential.
This paper constructs a rotating black hole metric within a Hernquist dark matter halo using the Newman-Janis algorithm and demonstrates that, particularly for high-spin black holes, the presence of dark matter has a negligible impact on accretion disk luminosity, making it difficult to distinguish these objects from standard Kerr black holes.
This paper employs a variational approach to derive junction conditions for gluing distinct gravitational theories across a non-null hypersurface, demonstrating that while the Ricci scalar may be discontinuous, the continuity of the extrinsic curvature and the derivative of the Lagrangian with respect to the Ricci scalar is required, with results shown to be consistent across Jordan and Einstein frames.
This paper investigates gravitational scattering within the gravitoelectromagnetism framework and the nonminimal Standard Model Extension, calculating Lorentz-violating corrections to the scattering cross section under both zero and finite temperature conditions using thermo field dynamics.
This paper demonstrates that Novikov coordinates, derived from the proper time of massive particles in free fall, provide a physically transparent description of gravitational collapse where the process completes in finite time for inertial observers, revealing the infinite-time collapse seen in Schwarzschild-Droste coordinates as a coordinate artifact of non-inertial, static observers.
This paper proposes a classical cosmological model in which electrically charged, extremely massive dark matter replaces dark energy, naturally yielding a cosmological constant comparable to the mean matter density without the need for fine-tuning.
This paper investigates how the differential Galactic acceleration of double white dwarf binaries affects their gravitational wave frequency chirps as observed by LISA, demonstrating how these measurements can be used to refine parameter estimation and map the distribution of matter in the Milky Way.
This paper calculates the mass and angular momentum of the Kerr black hole within the Teleparallel Equivalent (TEGR) and Symmetric Teleparallel Equivalent (STEGR) of General Relativity by applying covariant Noether charge formalisms with specific "turning off" gravity gauges, successfully recovering expected values while revealing limitations in satisfying Einstein's equivalence principle for rotating solutions.
This paper establishes that under mild conditions, a Wilsonian renormalization group flow of Feynman measures extending to arbitrary regularization strengths possesses a factorization property, ensuring the existence of a well-defined ultimate UV limit measure on distributional fields from which all regularized instances can be derived as marginals.