3884 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 demonstrates that in linearly coupled scalar-Gauss-Bonnet theory, scalar hair sourced by black holes in de Sitter spacetime exhibits superhorizon temporal and spatial growth driven by the underlying dynamics of massless scalar fields rather than the black hole itself, resulting in a steady energy flux that renders static solutions transient and inconsistent.
This paper develops a Bogomol'nyi framework for two-field scalar theories with topological vacua in rotationally symmetric backgrounds of arbitrary dimensions, demonstrating how explicit radial potential dependence stabilizes localized solitons against scaling instability and yields exact solutions across various spacetimes, including Minkowski, Schwarzschild, and de Sitter geometries.
This paper outlines the scientific potential and practical feasibility of deploying a long-baseline atom interferometer at the South Pole to detect decihertz gravitational waves, leveraging the site's unique low seismic noise and infrastructure to enhance global detector networks and fundamental physics tests.
This paper demonstrates that the gravity model provides a viable mechanism for gravitational baryogenesis that successfully explains the observed baryon-to-entropy ratio and remains consistent with current cosmological observations, including Hubble parameter data and the Pantheon+SH0ES dataset, when compared to the standard CDM paradigm.
This paper demonstrates that dyonic black hole spacetimes in a quasitopological non-linear electrodynamic field theory can support massive self-gravitating thin shells in static equilibrium at discrete, universal radii where the derivative of approaches zero, regardless of the central object's mass.
This paper investigates the thermodynamic and structural consistency of quantum-improved charged black holes with scale-dependent couplings, revealing that arbitrary radial dependencies for couplings are thermodynamically permissible while requiring specific constraints on the Newton coupling to reconcile equation and action levels, and suggesting that such quantum modifications may drive early universe isotropization.
This paper investigates the viability of anisotropic Thurston spacetimes as a background model for the universe by deriving and analyzing the specific temperature and polarization quadrupole signals they would imprint on the Cosmic Microwave Background, aiming to isolate these geometries through their unique Stokes parameter patterns.
This paper investigates static spherically symmetric Kundt vacuum solutions in quadratic and six-derivative gravity, characterizing their curvature singularities and demonstrating that, unlike in Einstein gravity, specific higher-derivative models admit globally smooth gravitational wave solutions on these backgrounds.
This paper demonstrates that the Kerr-Schild single-copy framework reveals a structural equivalence between the thermodynamic Smarr formula for static, spherically symmetric black holes and Gauss's law, while also showing that the thermodynamic pressure-volume term in asymptotically anti-de Sitter spacetimes arises naturally from gauge-theoretic background subtraction.
This paper demonstrates that while the massive Hellings-Nordtvedt theory's asymptotic vacuum structure restricts viable solutions to specific single-coupling sectors, the sector uniquely supports asymptotically flat Schwarzschild metrics with nontrivial vector fields, offering a viable framework for studying compact objects that satisfy weak-field constraints while exhibiting significant strong-field deviations from general relativity.