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.

⚛️ high-energy theory

On a lower-dimensional Killing vector origin of irreducible Killing tensors

This paper establishes conditions under which lower-dimensional symmetries of a foliated spacetime's base space, specifically arising from non-commuting Killing vectors, can be lifted to generate irreducible Killing tensors of higher rank in the full spacetime, a mechanism demonstrated through examples ranging from generalized Lense-Thirring metrics to rotating black holes in Einstein-Maxwell-Dilaton-Axion theory.

Finnian Gray, Gloria Odak, Pavel Krtouš, David Kubizňák2026-01-28
🔭 astrophysics

Impact of magnetic field gradients on the development of the MRI: Applications to binary neutron star mergers and proto-planetary disks

This study demonstrates that strong magnetic field gradients in post-merger environments can significantly suppress or slow the magneto-rotational instability (MRI), limiting its ability to amplify poloidal magnetic fields to only specific regions and late times (t100t \gtrsim 100 ms) after a binary neutron star merger.

T. Celora, C. Palenzuela, D. Viganò, R. Aguilera-Miret2026-01-28
⚛️ general relativity

Convection signatures in early-time gravitational waves from core-collapse supernovae

This study utilizes axisymmetric simulations of a rotating, magnetized 16.5M16.5\,\mathrm{M}_\odot progenitor to demonstrate that prompt stellar convection generates early-time gravitational wave signals with amplitudes comparable to or exceeding the bounce signal, while magnetic fields modulate signal strength by decelerating core rotation and influencing mode excitation.

Marco Cusinato, Martin Obergaulinger, Miguel-Ángel Aloy2026-01-28