⚛️ Category

gr-qc

4428 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.

⚛️ general relativity

Regularization effects on the observational appearance of asymmetric thin-shell wormholes from a new string-cloud geometry

This paper investigates how rational regularization of a new Letelier–Alencar string-cloud geometry alters the optical appearance of reflection-asymmetric thin-shell wormholes, demonstrating that while regularization modifies critical impact scales and reflected intervals, the resulting images can closely mimic black-hole controls depending on emission profiles and viewing inclination.

Zijun Zhong, Jonathan A. Rebouças, Edson Otoniel, Minyong Guo2026-10-21
⚛️ general relativity

Curvature Reconstruction and Tensor Polarizations in Isospectrality-Breaking Black-Hole Perturbations

This paper establishes a formal framework for reconstructing gravitational wave tensor polarizations from curvature perturbations in dynamical Chern-Simons gravity, demonstrating that while the axial sector couples to a scalar field, the leading asymptotic strain depends solely on the standard gravitational master functions without independent local scalar contributions.

Pratik Wagle, Dongjun Li, Yanbei Chen, Nicolas Yunes2026-10-21
⚛️ general relativity

Deglobalising the fit: how to search for physics beyond vacuum General Relativity in LISA catalogues

This paper proposes a two-step post-processing strategy to efficiently search for deviations from vacuum General Relativity in LISA data by quantifying how overlapping signals mask new physics through a "masking ratio" and identifying a minimal set of correlated nuisance sources that must be re-analyzed to recover the full statistical significance of potential deviations.

Francisco Duque, Jonathan Gair2026-10-21
⚛️ general relativity

Minimal-length kinematics of coherent light and a proposed two-color vacuum chronoscopy

This paper resolves the "soccer-ball problem" in generalized uncertainty principle (GUP) theories by demonstrating that macroscopic coherent light pulses inherit single-photon kinematic deformations without energy-dependent suppression, thereby enabling a proposed two-color vacuum chronoscopy experiment to probe Planck-scale physics using petawatt lasers.

Zhi-Wei Wang, Saurya Das, Samuel L. Braunstein2026-10-21
⚛️ general relativity

Rethinking Symmetry Principles and Partial Observables With Reference Frames

This paper argues that the use of dynamically uncoupled fields in reference frame models violates Earman's symmetry principle due to a deficit of dynamical structure and reveals that partial observables must be dynamically coupled to be bona-fide, thereby reinterpreting partial observables as gauge-variant relational quantities measured relative to uncoupled frames to vindicate Rovelli's claims against Thiemann and Adlam.

Nicola Bamonti, Henrique Gomes2026-10-20
⚛️ general relativity

Shadow of rotating black hole surrounded by dark matter

This paper investigates the impact of dark matter on the shadows of rotating Kerr black holes, revealing that while dark matter has negligible effects below a critical mass threshold, exceeding this limit causes significant structural expansion that challenges current observational constraints, thereby suggesting dark matter must be absent or minimal near black holes.

Haiyuan Feng, Ziqiang Cai, Rong-Jia Yang, Jinjun Zhang2026-10-20