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 presents a novel self-consistent framework coupling galaxy formation and cluster population synthesis to demonstrate that Milky Way globular clusters, including those accreted from satellites, serve as significant nurseries for dynamically-formed binary black holes, with merger rates increasing up to redshift z=5 and providing crucial insights for future gravitational-wave detectors.
This paper presents a more realistic formulation of Abbott et al.'s analysis by demonstrating that sequential quantum measurements, modeled via Gaussian wave packets, fundamentally alter the fractal geometry of particle paths by shifting the Hausdorff dimension, with nonselective evolution reducing roughness and selective evolution requiring feedback control to stabilize trajectories.
This paper establishes novel equivalences between complex and self-adjoint random matrix and tensor models with nontrivial quadratic terms by demonstrating that their partition functions are different integral representations of the same function, achieved through a newly discovered dually weighted intermediate field representation.
This paper revises the near-horizon description of Kerr space-time within the isolated horizon formalism by adopting a polar-angle-dependent Carter constant to construct a caustic-free, analytic Newman-Penrose tetrad and horizon-adapted coordinates that resolve previous pathologies and provide complete initial data.
This paper demonstrates that, contrary to the conventional belief that acceleration universally degrades quantum entanglement, the $1-3$ bipartite entanglement of a four-qubit cluster state remains strictly maximal under all relativistic accelerations, revealing a novel phenomenon of complete entanglement freezing.
This study demonstrates that Rastall gravity offers a viable phenomenological framework for mitigating the hydrostatic mass bias in galaxy clusters by effectively aligning hydrostatic mass estimates with observed baryonic or lensing masses, although it does not universally outperform other modified gravity models under standard statistical criteria.
This paper presents a Kerr black hole solution with a nontrivial vector field in bumblebee gravity, demonstrating that this solution can be derived from a spherical counterpart using the Newman-Janis algorithm, thereby providing a rare example of the algorithm's validity beyond general relativity.
This paper proposes a non-minimally coupled running curvaton model that successfully accommodates DESI's preference for dynamical dark energy with phantom crossing while preserving early-universe predictions and potentially alleviating the Hubble tension.
This paper extends a previous theorem to demonstrate that in generic scalar-vector-tensor theories of gravity, the metric field equations on FLRW spacetimes universally reduce to the Einstein equations with an effective perfect-fluid source, regardless of the specific theory's complexity, while the cosmological dynamics remain determined by the accompanying scalar and vector field equations.
This paper demonstrates that in Doubly Special Relativity, both local modified dispersion relations and rainbow-metric approaches yield a universal near-horizon black-hole temperature scaling determined solely by the ratio of deformation functions , with corrections becoming significant only in the Planck regime.