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 investigates how a generalized uncertainty principle (GUP) modifies the Bekenstein entropy bound in (3+1) and (2+1) dimensions via Geroch's process, demonstrating that a negative deformation parameter relaxes the bound while a positive one tightens it, thereby reflecting Planck-scale near-horizon redshift effects.
This paper investigates the horizon structure and quasinormal mode spectra of charged black holes embedded in anisotropic matter modeled by the Kiselev metric, utilizing a novel extension of Leaver's method combined with automatic differentiation to demonstrate how the surrounding environment modifies oscillation frequencies, induces long-lived modes, and causes spectral reorganization.
This paper introduces reduced quantum-reference-frame channels to characterize how open quantum systems evolve when reference frames are treated quantum mechanically, revealing that apparent decoherence can arise from reference frame degradation rather than intrinsic environmental interactions.
This paper presents a comprehensive study of the Einstein-Skyrme black hole, utilizing Ruppeiner geometry to reveal its dominant attractive microscopic interactions and negative Joule-Thomson cooling behavior, while also deriving effective potentials and rigorous greybody factor bounds to characterize its perturbative spectroscopy.
The paper argues that the current paradigm of Wilsonian quantum field theory is inadequate for resolving long-standing mysteries in particle physics and proposes replacing it with a holographic framework based on de Sitter holography, which naturally yields a rich standard model in the flat-space limit and eliminates the problem of huge quantum corrections to the cosmological constant.
This paper introduces the concept of well-conditioned embeddings for causal sets into Lorentzian manifolds, demonstrating that such embeddings into two different manifolds imply an -approximate isometry between their interiors, with the error vanishing in the high-density limit of Poisson sprinklings.
This study demonstrates that incorporating scalar bosonic dark matter into two-fluid color-flavor-locked strange quark star models allows for the existence of massive compact objects in the lower mass-gap region, such as the secondary component of GW190814, while maintaining qualitative compatibility with tidal deformability constraints from GW170817, noting that the dark matter component does not always form an extended halo as this depends on the model parameters.
This paper introduces a novel Physics-Informed Neural Network (PINN) framework, enhanced with specific techniques to handle high non-linearity, which successfully and accurately solves the Hamiltonian constraint equation for binary black hole initial data in numerical relativity, offering a robust alternative to traditional numerical methods.
This paper introduces a background-independent one-loop renormalization framework that analytically isolates and absorbs UV divergences into local counterterms using universal WKB behavior, thereby yielding finite, model-independent expressions for primordial scalar and tensor spectra without requiring specific background evolution or full field dynamics.
This paper investigates the quasinormal modes of scalar perturbations in a five-dimensional Rastall thick brane model, revealing that the Rastall parameter significantly influences the decay rates and oscillation frequencies of these modes while determining the power-law exponent of their late-time asymptotic tails.