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 paper demonstrates that tetrapartite entanglement in a four-qubit Dicke state exhibits a non-monotonic evolution under the Unruh effect, initially decreasing but subsequently increasing toward a finite value as acceleration grows, thereby challenging the conventional view of monotonic degradation and highlighting the potential of Dicke states as robust resources for relativistic quantum information processing.
This paper demonstrates that black hole ringdown acts as a spectral filtering process where quasinormal mode excitation amplitudes are quantitatively determined by the Fourier content of the initial perturbation at the modes' characteristic frequencies, a mechanism validated through analytical derivations, numerical simulations, and a new fitting tool called .
This paper proposes that spacetime discreteness emerges naturally from the consistency of microscopic measurements, where treating infinitesimal intervals as scale-dependent outcomes leads to discrete, equidistant lengths and a geometric renormalization-group flow that preserves Lorentz invariance and general covariance without ad hoc cutoffs.
This paper introduces the criterion of physical coherence to evaluate and challenge quantum gravity programs that attempt to derive time from a timeless fundamental level, specifically testing semiclassical and thermal time approaches against metaphysical incoherence arguments while setting a standard for their conceptual success.
This paper investigates the absorption and scattering cross sections of massive scalar waves in charged Ayón-Beato-García and Bardeen regular black hole spacetimes, demonstrating that increasing the field's mass reduces total absorption and widens interference patterns while revealing conditions under which these regular black holes exhibit spectral similarities to standard Reissner-Nordström black holes.
This paper investigates the thermodynamic properties, Hawking-radiation sparsity, and greybody factors of a hairy Kiselev black hole surrounded by quintessential matter, revealing how exponential hair and quintessential fields respectively govern small-scale and large-scale behaviors, induce phase transitions, and cause highly intermittent radiation emission.
This paper explores universalities in the partition functions of various low-dimensional quantum gravity models by analyzing their holographic connections, parameter dependencies, spectral properties, and entanglement-related phenomena such as wormholes and defects.
This paper presents an exact, self-dual gravitational instanton solution on a locally conformal Kählerian manifold within a brane world model, characterized by a quintic polynomial singularity that defies the standard Plebanski-Demianski classification and offers a novel topological framework for resolving black hole information paradoxes through antipodal boundary conditions on a Klein bottle.
This paper investigates static, spherically symmetric spacetimes in covariant teleparallel gravity with electromagnetic sources, deriving field equations and conservation laws to establish a general reconstruction procedure that yields exact charged solutions—including black-hole-like and wormhole-like branches—which generalize Reissner–Nordström spacetimes and offer new insights into strong-field physics beyond General Relativity.
Using a novel reversible-jump Markov chain Monte Carlo method, this study identifies three distinct binary black hole subpopulations with unique mass, spin, and redshift evolution characteristics, providing a data-driven framework to distinguish between isolated binary and dynamical formation channels.