2489 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 study demonstrates that seasonal seismic noise variations at the Einstein Telescope's Sardinia candidate site have only a minor impact (a few percent) on detector sensitivity and signal-to-noise ratios for compact binary coalescence events, confirming the site's suitability for achieving low-frequency gravitational wave detection goals.
This paper derives the standard gravitational lensing time delay formula from exact null geodesics in the Schwarzschild-de Sitter metric, identifying a higher-order correction intrinsic to the Schwarzschild geometry that does not introduce new cosmological dependencies beyond those already present in angular diameter distances and the redshift prefactor.
This paper investigates how various dark matter halo profiles (King, Hernquist, and Moore) affect the shadows of rotating Kerr-like black holes and concludes that while the presence of dark matter increases the shadow radius compared to a vacuum Kerr black hole, the specific halo profile has a negligible impact on the shadow's size and shape, rendering it an ineffective tool for distinguishing between different dark matter distributions in galactic centers.
This paper presents updated experimental constraints on the gravitational inverse-square law at short ranges, offering a consistent formalism to compare diverse tabletop and high-energy collider results with theoretical extensions of general relativity, including extra-dimensional models.
This paper demonstrates that traversable wormhole solutions can be supported by higher-derivative gravity corrections, which effectively reduce or entirely eliminate the need for exotic matter by contributing to the stress-energy tensor.
This paper establishes a unified geometric framework linking generalized black hole entropy functionals to scalar-tensor gravity by deriving specific Einstein-frame scalar potentials that connect information-theoretic entropy proposals to observable cosmological phenomena while remaining consistent with current experimental constraints.
Using variational Monte Carlo methods with neural quantum states, this study analyzes the near-kernel sector of the Hamiltonian constraint in quantum reduced loop gravity and identifies three distinct classes of solutions, including a factorized branch that is accurately described by emergent semiclassical Thiemann coherent states.
This paper investigates the energy conditions and stability of charged traversable wormholes within modified gravity, demonstrating that while radial null energy conditions are broadly satisfied, tangential violations occur at higher charge values to support throat formation, with distinct matter distribution profiles differentiating these structures from compact objects like neutron stars.
This paper presents generalized parameter-space metrics for the -statistic that incorporate realistic effects like data gaps and varying noise floors to provide more accurate mismatch predictions, thereby potentially reducing the computational cost and improving the sensitivity of continuous gravitational-wave searches.
This paper demonstrates that excitations in spin-1 Bose-Einstein condensates can be mapped to emergent relativistic quantum field theories, including massive Proca fields, on curved acoustic spacetimes with bi- or tri-metric structures, thereby enabling the quantum simulation of cosmological particle production and spin-nematic squeezing through controlled magnetic field variations.