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.

🔭 astrophysics

The Stochastic Siren: Astrophysical Gravitational-Wave Background Measurements of the Hubble Constant

This paper proposes a novel "stochastic siren" method that utilizes the stochastic gravitational-wave background from binary black hole mergers to measure the Hubble constant independently of electromagnetic observations and resolved standard sirens, potentially offering a unique pathway to resolving the Hubble tension through the progressive tightening of lower bounds as non-detections continue.

Bryce Cousins, Kristen Schumacher, Adrian Ka-Wai Chung, Colm Talbot, Thomas Callister, Daniel E. Holz, Nicolás Yunes2026-09-01

⚛️ high-energy theory

Gravitational Wave with Domain Wall Dominance

This paper proposes that a "domain wall dominant" phase in the early universe, characterized by power-law accelerated expansion, produces a distinct stochastic gravitational wave background with amplitude independent of wall tension, offering a unique signature to differentiate these events from other cosmological sources.

Sungwoo Hong, Sung Mook Lee, Qiuyue Liang2026-09-01

⚛️ general relativity

Consistent Truncation of Linearized gravitational waves in de Sitter space-time

This paper clarifies the consistency issue in truncating linearized gravitational waves in de Sitter space-time by deriving a general procedure that ensures truncated solutions satisfy both the wave equation and gauge conditions, while correcting previous errors and verifying the method in both generalized harmonic and Bondi gauges.

Ghanashyam Date, Harsh2026-09-01

⚛️ high-energy theory

Carroll-Cotton Tensors and Gravitational Radiation at Null Infinity

This paper introduces Carroll-Cotton tensors as a first-principles, conformally covariant geometric tool defined on conformal Carroll geometries to naturally quantify gravitational radiation and deviations from stationarity at null infinity, offering a more complete description than the Bondi news which requires supplementary data.

Adrien Fiorucci, Simon Pekar, P. Marios Petropoulos, Matthieu Vilatte2026-09-01

⚛️ high-energy theory

OPE and correlation functions in a generally covariant form

This paper extends the construction of scalar channel descendants in the operator product expansion (OPE) on conformally flat spaces and investigates short-distance behaviors of three-point functions on non-conformally flat curved spaces, identifying necessary corrections to the existing ansatz to ensure a local covariant OPE.

Arpit Das, Anatoly Konechny, Naveen Balaji Umasankar2026-09-01

⚛️ general relativity

A Quasi-local Entropy for Black Hole Space-times

This paper demonstrates that for static and spherically symmetric black holes, the angular components of the Brown-York tensor define a quasi-local entropy that vanishes at infinity, increases monotonically toward the horizon, and equals the Bekenstein-Hawking entropy there, thereby providing explicit verification of the covariant entropy conjecture.

Raymond Isichei2026-09-01

⚛️ general relativity

Schwarzschild spectral ladders on the negative imaginary axis: Endpoint nonselection, branch-cut phase, and Jost classification

This paper demonstrates that while compactified spectral discretizations of Schwarzschild perturbations produce stable negative-imaginary-axis eigenvalue ladders, these candidates are ultimately rejected as physical quasinormal modes because they fail the invariant Jost determinant pole criterion, despite exhibiting characteristic branch-cut phase properties and pairing with high-order QNMs.

Davide Batic, Denys Dutykh, Mark Essa Sukaiti2026-09-01

⚛️ general relativity

Exact dynamics and the spin wall for large-spin particles in Schwarzschild spacetime

This paper presents an exact, nonperturbative analysis of spinning test particles in Schwarzschild spacetime that reveals a novel "spin wall"—an impenetrable barrier arising at large spins which shields the event horizon and filters infalling particles, features that are entirely absent in standard linearized spin approximations.

Chao-Jun Feng, Rui-Hui Lin2026-09-01

⚛️ general relativity

Yukawa modification of Traversable Wormholes supported by Holographic Dark Energy

This paper investigates traversable wormholes supported by holographic dark energy with Yukawa modifications, finding that while Zero Tidal Forces can be maintained in a large region, the Yukawa distortion generally introduces negative energy density, with only the Bekenstein-Hawking profile remaining entirely positive.

Remo Garattini, Phongpichit Channuie, Kirill Zatrimaylov2026-09-01

⚛️ general relativity

Resonant bound orbits and kludge waveforms in rotating Konoplya-Zhidenko black hole spacetime

This paper investigates timelike bound motion and resonant periodic orbits in rotating Konoplya-Zhidenko black hole spacetime, demonstrating how spacetime deformation alters orbital trajectories and generates millihertz-frequency gravitational-wave signals detectable by future space-based observatories.

Qiyu Dai, Xiongjun Fang, Xiao-Mei Kuang, Jiliang Jing2026-09-01

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