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.

Massive scalar field perturbations in noncommutative-geometry-inspired Schwarzschild black hole

This paper employs a third-order WKB approximation to demonstrate that massive scalar field perturbations render noncommutative-geometry-inspired Schwarzschild black holes stable, while revealing that the noncommutative parameter $\theta$ and field mass $\mu$ exert opposing influences on quasinormal mode frequencies, greybody factors, and absorption cross sections, with their effects potentially canceling out in extreme black hole scenarios.

Wen-Hao Bian, Zhu-Fang Cui2026-04-03⚛️ gr-qc

Emergence of volume-law scaling for entanglement negativity from the Hawking radiation of analogue black holes

This paper presents a lattice-regularized simulation of analogue black holes demonstrating that Hawking radiation induces a UV-finite, volume-law scaling in entanglement negativity, thereby encoding the spatial distribution of entangled pairs and offering a pathway to experimentally probe black-hole thermodynamics and unitarity.

S. Mahesh Chandran, Uwe R. Fischer2026-04-03⚛️ gr-qc

Boundedness and decay for the conformal wave equation in Schwarzschild-AdS under dissipative boundary conditions

This paper establishes that the conformal wave equation on 4-dimensional Schwarzschild-AdS spacetimes under dissipative boundary conditions exhibits arbitrary polynomial energy decay, a significant improvement over the logarithmic decay seen with Dirichlet conditions, by demonstrating that the decay rate is independent of photon sphere trapping provided sufficient commuted energies are controlled.

Alex Tullini2026-04-03⚛️ gr-qc

Localized formation of quiescent big bang singularities

This paper establishes a localized big bang formation result for the Einstein-nonlinear scalar field equations that does not require proximity to a background solution, utilizing a novel spacelike foliation to synchronize the singularity and provide a complete geometric description of the asymptotics.

Andrés Franco-Grisales2026-04-03⚛️ gr-qc

Axial gravitational perturbations and echo-like signals of a hairy black hole from gravitational decoupling

This paper demonstrates that axial gravitational perturbations of a hairy black hole derived via gravitational decoupling can naturally produce echo-like late-time signals due to a dynamically generated double-peak effective potential, offering a geometric alternative to ad-hoc near-horizon reflectivity for probing deviations from the no-hair paradigm.

Yi Yang, Ali Ovgun, Gaetano Lambiase, Dong Liu, Zheng-Wen Long2026-04-03⚛️ gr-qc

Quadratic gravity corrections to scalar QNMs of rapidly rotating black holes

Using recently constructed numerical black-hole solutions valid for large spins, this paper computes leading-order quadratic-curvature corrections to the scalar quasinormal mode spectrum of rapidly rotating black holes in scalar Gauss-Bonnet and dynamical Chern-Simons gravity, revealing that these deviations can increase by orders of magnitude for spins exceeding $a/M=0.9$ .

Stef J. B. Husken, Tom van der Steen, Simon Maenaut, Kelvin Ka-Ho Lam, Maxim D. Jockwer, Adrian Ka-Wai Chung, Thomas Hertog, Tjonnie G. F. Li, Nicolás Yunes2026-04-03⚛️ gr-qc

Gravitational null rays: Covariant Quantization and the Dressing Time

This paper presents a fully gauge-invariant covariant quantization of gravitational null rays using the dressing time as a gravitational quantum reference frame, introducing covariant normal ordering to establish a Virasoro crossed product algebra of observables and demonstrating how classical deformations cancel quantum anomalies while revealing the dressing time's non-ideal nature through Teo-Takhtajan energy overlaps.

Laurent Freidel, Josh Kirklin2026-04-03⚛️ hep-th

Unveiling the Coma Cluster Structure: From the Core to the Hubble Flow

This paper utilizes a density-based member selection method on SDSS data to map the Coma Cluster's structure from its core to the Hubble flow, yielding precise measurements of its distance, mass, and the surrounding Hubble constant while minimizing model dependencies.

David Benisty, Jenny Wagner, Sandeep Haridasu, Paolo Salucci2026-04-02⚛️ gr-qc

Holographic cosmology with logarithmic equation of state based on a new generalized entropy

This paper explores the late-time accelerating evolution of a spatially flat FRW universe by modeling a dark viscous fluid with a logarithmic equation of state coupled to dark matter, utilizing a new generalized entropy function to derive holographic expressions for energy densities and the Hubble function.

I. Brevik, A. V. Timoshkin2026-04-02⚛️ gr-qc

Sphere amplitudes and observing the universe's size

This paper proposes that sine dilaton gravity, holographically dual to DSSYK, provides a UV-complete framework for 2d quantum cosmology where the sphere amplitude yields a finite, normalizable no-boundary state that predicts a flat distribution for the universe's size, thereby resolving the non-normalizability and small-universe contradictions found in standard slow-roll inflation and dS JT gravity.

Andreas Blommaert, Adam Levine2026-04-02⚛️ hep-th

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