⚛️ Category

gr-qc

3773 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

Bridging the Population Synthesis of Supermassive Binary Black Holes and the Gravitational Wave Background

This paper introduces a novel method that directly captures the full strain probability density from semi-analytic models to bridge supermassive binary black hole population synthesis with gravitational wave background observations, successfully reproducing NANOGrav 15-year results and mapping PTA data to the Illustris simulation framework to quantify the impact of merger delay times.

Kanyuni Iemoto, Boris Goncharov, Gabriela Sato-Polito, Xiaoming Bi2026-09-09
⚛️ general relativity

Search for Long-Transient Gravitational Waves from Supernova SN2023ixf using GFH-v2 Pipeline

This paper presents the first application of the GFH-v2 pipeline to search for long-transient gravitational waves from the newborn magnetar remnant of supernova SN2023ixf using LIGO data, resulting in no detections but establishing 90% upper limits on the maximum detectable distance that, while below the distance to M101, characterize the pipeline's performance on real detector data.

Sandhya Sajith Menon, Lorenzo Pierini, Pia Astone, Cristiano Palomba, Francesco Safai Tehrani, Lorenzo Silvestri, Ornell (…)2026-09-09
⚛️ general relativity

Nonradial oscillations of realistic anisotropic neutron stars: Polar modes

This paper investigates polar oscillations of anisotropic neutron stars in full general relativity, revealing how pressure anisotropy influences ff-mode frequencies and damping times while establishing quasi-universal relations between these oscillation properties and stellar compactness that could enable future constraints on anisotropy through asteroseismology.

L. M. Becerra, José F. Rodríguez-Ruiz, E. A. Becerra-Vergara, F. D. Lora-Clavijo2026-09-09
⚛️ general relativity

Picard Iteration for the Characteristic Initial Value Problem in Einstein Equations

This paper introduces a Picard iteration algorithm for solving vacuum and Einstein scalar-field equations in double-null gauge by transforming non-linear partial differential equations into ordinary differential equations, utilizing a numerical framework that combines characteristic constraint solves, LGL spectral elements, pole-free spherical operators, and rigorous residual checks.

Shengrong Wu2026-09-09