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 study demonstrates that the integrated gravitational wave memory from high-redshift binary mergers, which is significantly amplified by cosmological expansion and exhibits strong non-linear sensitivity to dark energy models, offers a novel and powerful independent probe to address cosmological tensions and constrain the nature of dark energy using next-generation detectors.
This paper bridges information-theoretic and relativistic causality by refining causal inference techniques for unfaithful models, introducing the geometric property of conicality to distinguish space-time dimensions, and establishing a correspondence between faithful causal models and conical space-times to clarify the relationship between no-superluminal-signalling constraints and causal structures.
This paper reports the first experimental demonstration of a next-generation wavefront actuator tested on a full-scale LIGO mirror, proving its ability to provide high-precision corrections at megawatt power levels with minimal noise to enable the sensitivity requirements of future gravitational-wave observatories like Cosmic Explorer.
This paper proposes and validates a practical quadratic estimator method for testing the weak equivalence principle using biased tracers in large-scale structure surveys, demonstrating that it achieves competitive constraints on equivalence principle violations compared to direct bispectrum measurements by leveraging mildly nonlinear scales.
This paper proposes that hierarchical black hole mergers like GW231123 naturally occur in nuclear star clusters through a combined channel of binary-single interactions and secular evolution driven by a central supermassive black hole, predicting a concurrent population of observable black hole-star binaries.
This paper investigates spherically symmetric wormhole solutions in a k-essence theory coupled to a phantom scalar field for both electrically and magnetically charged scenarios, deriving explicit field expressions for generalized Ellis-Bronnikov models and demonstrating that null energy condition violations depend on geometric parameters while confirming the linear stability of these models through WKB and time-domain analyses.
This paper investigates the dynamics, ringdown, and accretion-driven quasi-periodic oscillations of Kerr-Bertotti-Robinson black holes, demonstrating how mass, rotation, and magnetic fields influence particle motion, scalar quasinormal modes, and the formation of distinct accretion structures that generate multiple QPOs.
This paper introduces two numerical methods to calculate exact post-Newtonian parameters in Brans-Dicke and Entangled Relativity theories, revealing significant deviations from standard values for strongly gravitating bodies and demonstrating that the testability of Entangled Relativity critically depends on the choice of matter Lagrangian.
This study demonstrates that in confusion-limited LISA data, global latent density models outperform local geometry-based methods in characterizing source resolvability, suggesting that resolvability information is better captured by the global properties of the latent distribution rather than local manifold structure.
This paper establishes a unified framework for constructing thin-shell wormholes from various entropy-induced black-hole geometries, demonstrating that while entropy deformations alter horizon structures and throat regions, linear stability is achieved only through the specific interplay between the entropic geometry and the dynamical response of a variable Chaplygin shell, whereas constant-barotropic configurations remain unstable.