gr-qc papers | Gist.Science

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.

Degenerate Geometries as Matter-Free Physical Configurations in General Relativity: Three Examples

This paper demonstrates that three specific degenerate spacetime configurations with wormhole topology, derived from Rindler, Minkowski, and Schwarzschild metrics via branching coordinate transformations, represent matter-free physical states within the Einstein-Palatini-Cartan framework, thereby establishing degenerate geometries as an independent sector of general relativity distinct from non-degenerate wormholes that require exotic matter.

Juri Dimaschko2026-06-09⚛️ gr-qc

Warped Product Einstein Manifolds in Four Dimensions

This paper presents an algebraic classification of four-dimensional warped product Einstein manifolds by constructing and relating two matrix representations of the curvature tensor, thereby determining their Petrov types and establishing topological restrictions in the half-conformally flat limit.

Jack C. M. Hughes, Joudy F. Jamal Beek, Fedor V. Kusmartsev2026-06-09⚛️ gr-qc

A New Route to the Annihilation of Multi-Wall String Topological Configurations

This paper proposes a new mechanism for the annihilation of cosmologically problematic domain walls attached to cosmic strings in global $U(1)$ symmetry models, demonstrating that radiative corrections from small bare fermion masses can generate a temperature-dependent bias that triggers the network's decay, using a majoron framework with right-handed neutrinos as a representative example.

Utsav Atta, Tathagata Ghosh, Sudip Manna2026-06-09⚛️ hep-ph

Higher-dimensional quantum-corrected Oppenheimer-Snyder model with a cosmological constant

This paper extends the higher-dimensional quantum-corrected Oppenheimer-Snyder model to include a cosmological constant, demonstrating that in Anti-de Sitter spacetime, quantum corrections prevent temperature divergence for small black holes and induce a new phase transition in their thermodynamic behavior.

Shudi Jiang, Jianhui Lin, Xiangdong Zhang2026-06-09⚛️ gr-qc

Stimulated Emission from Boson Clouds

This paper demonstrates that rotating black holes surrounded by superradiant boson clouds can act as natural gravitational-wave amplifiers through a stimulated emission mechanism, potentially enhancing faint signals by several orders of magnitude to bridge the sensitivity gap between current ground-based detectors and pulsar timing arrays.

Yu An, Xian-Hui Ge, Yun-Gui Gong, Yun-Long Zhang2026-06-09⚛️ gr-qc

Frenet-Serret equations with variable proper acceleration in Minkowski spacetime

This paper investigates Frenet-Serret equations for timelike worldlines in Minkowski spacetime with variable proper acceleration and torsion, relating intrinsic geometric parameters to kinematic quantities like four-jerk and four-snap to clarify how non-uniform acceleration modifies the geometry of relativistic motion.

Ivan Perez-Roman, Michael R. R. Good, Yen Chin Ong, Haret C. Rosu2026-06-09⚛️ gr-qc

Post-Merger Gravitational-Wave Uncertainties of Binary Neutron Stars under Multi-Messenger EOS Constraints

By combining multi-messenger constraints on the equation of state with general-relativistic hydrodynamics simulations, this study demonstrates that current data tightly restricts the uncertainty of the dominant post-merger gravitational-wave frequency to approximately 100 Hz, implying that future deviations from this prediction would signal new physics such as a finite-temperature hadron-quark transition.

Yong-Jia Huang, Luca Baiotti2026-06-09🔭 astro-ph

Non-Perturbative Bounds on Cosmological Backreaction, the Non-Linear Scale, and Gauge-Invariant Mutual Information from the Matter Power Spectrum

This paper applies a mesoscopic coarse-graining framework to establish a non-perturbative lower bound on kinematic backreaction, explain the failure of standard perturbation theory via KAM theory at the non-linear scale, and derive a gauge-invariant mutual information measure computable from the matter power spectrum to quantify backreaction corrections.

Bob Osano2026-06-09⚛️ gr-qc

Fire at the Tip of the Throat: Hagedorn Phase after brane-antibrane inflation?

This paper investigates how perturbatively stabilized brane-antibrane inflation can lead to a post-annihilation open-string Hagedorn phase in the visible sector, potentially suppressing dark radiation ( $\Delta N_{\rm eff}$ ) depending on the relative locations of the Standard Model and annihilation throats and their respective string scales.

Dibya Chakraborty, Ahmed Rakin Kamal2026-06-09⚛️ hep-th

Line-of-sight acceleration in compact binaries with higher harmonics and eccentricity

This paper presents a robust framework for incorporating line-of-sight acceleration effects into state-of-the-art gravitational-wave waveform models with higher harmonics and eccentricity, revealing that inconsistent treatment of these effects can bias results while finding no substantial evidence for such acceleration in analyzed LIGO-Virgo events.

Soumen Roy, Justin Janquart2026-06-09⚛️ gr-qc

← Previous Next →