2532 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 systematically investigates static plane symmetric solutions in gravity, deriving vacuum spacetimes equivalent to Taub-(anti) de Sitter geometries and analyzing how singular shells and finite-thickness slabs with isotropic matter influence the internal pressure distribution and structural stability, particularly within quadratic models.
This paper develops a nonlinear formulation of cosmological perturbations on superhorizon scales for non-adiabatic multi-fluid systems using the ADM formalism and spatial gradient expansion, explicitly constructing solutions that incorporate both adiabatic and entropy modes while analyzing their time evolution under different initial conditions.
This paper demonstrates that the proposed lunar-based Crater Interferometry Gravitational-wave Observatory (CIGO) and its upgraded tetrahedral configuration (TCIGO) can significantly outperform existing space-based missions like TianQin and LISA in sky map resolution for monochromatic sources in the 0.1–10 Hz band, provided lunar noise is effectively mitigated.
This paper presents an analytical solution for traversable wormholes with a positive cosmological constant using the gravitational decoupling method, revealing a configuration with both a standard and a cosmological throat that satisfies the flare-out condition and allows for safe human passage despite violating the null energy condition.
This paper demonstrates that a frontier Large Language Model (Claude) interfaced with a computer algebra system (Maple) and enhanced with in-context learning via worked examples can reliably execute complex algorithmic computations in theoretical physics, specifically for cosmological perturbations in modified gravity theories, while also identifying current limitations and improvement strategies.
This paper proposes a non-parametric equation of state that reveals non-conformal behavior beyond neutron star densities, characterized by an early stiffening followed by extended softening to satisfy observational and theoretical constraints, thereby providing evidence for a hadron-quark phase transition in the cores of massive neutron stars.
This paper reviews the principles, methodologies, and future prospects of using gravitational-wave standard sirens from both bright and dark sources to independently measure cosmological parameters, particularly the Hubble constant and dark energy, with current and next-generation detectors.
This paper computes the gravitational waveform for a radially infalling particle into a Schwarzschild black hole, achieving the highest accuracy level in the literature (3.5PN order) by incorporating both conservative and radiation-reaction effects within the post-Newtonian approximation.
This paper introduces a unified HeunC framework that reformulates the Teukolsky equations to compute gravitational-wave fluxes from generic Kerr orbits with high precision and efficiency, achieving relative errors of while reducing computational costs by factors of 2–10 compared to existing state-of-the-art methods.
This paper investigates static spherically and axially symmetric self-gravitating non-Abelian monopoles within modified gravity, demonstrating that the gravitational modifications introduce significant differences compared to Einstein-Yang-Mills-Higgs theory, particularly for systems with strong Higgs self-coupling.