3826 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 a phenomenological model of rotating gravastars within gravity to demonstrate how modified gravity parameters alter accretion dynamics and ISCO locations, potentially producing a distinct "filled-in" central shadow in interferometric observations as a testable signature against standard black holes.
This paper establishes a sufficient convexity criterion for off-shell Kerr geometries with nondecreasing mass profiles and uses a fuzzy-dark-matter-inspired benchmark to demonstrate that while static horizon and photon sphere responses are profile-controlled, spin-odd shadow displacements depend on the specific completion, with local profile-gradient effects being negligible in weak-field limits.
This paper determines the small-oscillation period of a simple pendulum in Schwarzschild spacetime by modeling the rope as a spatial geodesic, deriving a formula expressed via the Schwarzschild lapse function that recovers the classical Newtonian result in the weak-field limit while differing from previous studies that assumed a coordinate-length constraint.
This paper demonstrates that while perfect fluid dark matter modifies the thermodynamic phase structure of charged AdS black holes, the fundamental quasinormal modes of massless scalar perturbations serve as a distinct dynamical signature for first-order small/large black hole transitions but fail to exhibit sharp features at the second-order critical point.
Using the Iyer-Wald formalism, this paper derives the explicit analytical expression for the first law of black hole thermodynamics within the framework of conformal Einstein-power-Yang-Mills theory by comparing infinitesimally neighboring stationary black hole solutions.
This paper presents an analytical method combining black hole thermodynamics and continued fraction expansion to derive charged black hole solutions in higher-curvature gravity, demonstrating their consistency with results from Einstein gravity.
This paper refutes Ray et al.'s claim that Pantheon+ supernova data shows isotropic deceleration by demonstrating that their conclusion is baseless due to a fundamental error in confusing Equatorial and Galactic coordinates, which led to an incorrect identification of the CMB dipole direction.
This paper presents a rigorous construction and existence proof for a new family of exact general relativistic shock waves that match self-similar expanding spacetimes to static stellar models, demonstrating that such shock-wave spacetimes can exhibit accelerated expansion without a cosmological constant, thereby offering a potential mathematical alternative to dark energy.
This paper demonstrates that a sudden transition from a homogeneous to an inhomogeneous Dirac velocity in one-dimensional fermions induces an analog Unruh effect characterized by localized particle creation, which persists even for realistic velocity profiles that deviate from the ideal linear Rindler form.
This memorial paper systematically reviews the legacy of Alexei Starobinsky's 1979–1980 inflation model from a modern perspective, proposing deformations for primordial black hole production, discussing quantum corrections within superstring theory and the Swampland Program, and highlighting its universal reheating mechanism.