3256 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 introduces a causal convolutional neural network trained on RNS-generated data to rapidly and accurately reconstruct observables for fast-rotating neutron stars, reducing computation time from approximately 30 minutes to 50 milliseconds per configuration and enabling efficient inference analyses that were previously hindered by the high cost of traditional two-dimensional modeling.
This paper constructs the Kerr-Schild classical double copy for a Randall-Sundrum II black string, demonstrating that while the canonical splitting yields a sourceless Maxwell field and a massive scalar reflecting the warped geometry, an alternative gravitationally equivalent splitting produces physically distinct double copies where the gauge field is supported by a bulk current and the scalar remains massless and insensitive to the extra dimension.
This study analyzes gravitational-wave events from the LIGO-Virgo-KAGRA O4a and O4b runs to identify dynamically formed binary black holes, finding that their typical recoil velocities likely eject merger remnants from globular clusters but allow for potential retention in nuclear star clusters, thereby constraining hierarchical black hole growth scenarios.
This paper proposes a graph-theoretic mechanism analogous to the Higgs mechanism, where coupling a scalar degree field to a vector-like edge field generates massive excitations with a mass gap, demonstrating that matter-like structures with varying mass and localization properties can emerge solely from the connectivity and density of discrete graphs.
This paper presents new analytic Ricci-flat planar black hole and soliton solutions with primary scalar hair in asymptotically AdS space, demonstrating that these regular geometries undergo a first-order phase transition where the hairy soliton acts as the ground state, with the transition temperature and preferred phase window significantly influenced by the scalar hair parameter.
This paper demonstrates that equatorial asymmetry in black hole spacetimes causes thick accretion tori (Polish doughnuts) to become vertically distorted and twisted away from the equatorial plane, a phenomenon that persists regardless of whether the fluid's specific angular momentum profile is constant or variable.
This paper presents Causal Dynamical Triangulations (CDT) as a nonperturbative lattice approach to quantum gravity that successfully demonstrates the dynamical emergence of a classical de Sitter-like universe from a sum over causal triangulations, while revealing unique short-scale properties such as a spectral dimension of approximately 2 and evidence for an ultraviolet fixed point.
This paper investigates the thermodynamic properties, phase transition behavior, and geodesic structure of phantom BTZ black holes within an -gravity framework, demonstrating their adherence to the first law of thermodynamics, the occurrence of second-order phase transitions confirmed by Ehrenfest equations, and the existence of stable circular orbits for both massive and massless particles in specific curvature regimes.
This paper investigates the strong gravitational lensing, timelike geodesic dynamics including ISCO stability, and electromagnetic quasinormal modes of a static spherically symmetric black hole with a global monopole, revealing that increasing the monopole parameter enlarges the shadow radius and ISCO while inducing slower damping in gravitational wave oscillations.
This paper establishes a unified Monodromy-Matrix framework based on the Breitenlohner--Maison linear system for extremal multi-centered black holes in five-dimensional supergravity, explicitly constructing and analyzing coset and monodromy matrices for both BPS and almost-BPS configurations, including rotating single-center black holes and two-center black rings, to demonstrate how nilpotent and idempotent algebraic structures govern their solution-generating properties.