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 investigates Lorentz-violating effects in a rotating bumblebee black hole, revealing that such violations suppress Lense-Thirring precession while enhancing geodetic and periastron precession, and significantly alter accretion disk images by shrinking the inner shadow, thereby offering complementary observational probes for strong-field gravity.
This paper investigates phase transitions in anti-de Sitter black holes coexisting with anisotropic matter fields, demonstrating their resemblance to Reissner-Nordström black holes and analyzing the correlation between these thermodynamic phases and the Lyapunov exponents derived from unstable null geodesics.
This paper numerically demonstrates that semiclassical states in the one-vertex model of quantum-reduced loop gravity evolve to closely match classical homogeneous and isotropic cosmology, while also exhibiting a quantum-induced "bounce" that halts gravitational contraction and initiates expansion.
This paper identifies universal non-Gaussian signatures in the inflationary bispectrum arising from transient tachyonic instabilities of entropic fluctuations, demonstrating that exact numerical calculations reveal distinctive features like magnified folded configurations and tachyonic resonances that cannot be fully captured by single-field effective descriptions, while providing new templates for observational constraints on non-geodesic inflationary attractors.
This paper develops a contraction theory for universal -matrices of quantum groups to derive a new (1+1) centrally extended quantum Poincaré algebra whose dual form naturally describes relativistic quantum reference frame transformations and contracts to the known Galilei -matrix for non-relativistic frames.
This paper investigates the thermodynamics, photon sphere, shadow, and dynamical stability of an AdS Ayón-Beato-García massive black hole, revealing how graviton mass and magnetic charge influence its Gibbs free energy, shadow radius, and quasinormal modes while confirming its overall stability.
This paper initiates a program to investigate the ultraviolet completion of generalised Proca theories within the asymptotic safety paradigm, identifying non-perturbative fixed points that demonstrate the renormalisability of vector-tensor theories and constrain viable late-time cosmological scenarios.
This paper proposes a covariant multi-scale framework that resolves the limitations of geodesic flow in general relativity by decomposing spacetime into hierarchical regions, providing a first-principles foundation for cosmological zoom-in simulations that naturally explains flat galaxy rotation curves through geometric backreaction without requiring dark matter.
This paper demonstrates that tree-level cosmological wavefunctions in theories are uniquely determined by locality and a newly discovered set of hidden zeros that enforce a dual "shuffle" factorization principle, thereby extending on-shell methods and the zeros-BCFW correspondence from flat-space scattering amplitudes to cosmology.
This paper presents a relativistic cosmological perturbation theory that uniquely defines energy and particle number density perturbations to explain the mass and formation times of the universe's earliest structures, attributing their rapid initial growth to negative nonadiabatic pressure perturbations arising during the matter-radiation decoupling era.