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.

Inflation with the Gauss-Bonnet term in the Palatini formulation

This paper investigates inflation driven by a Gauss-Bonnet term coupled to an inflaton within the Palatini formulation of gravity, demonstrating that while the connection dynamics differ from the metric case, the resulting modifications to the inflaton kinetic term and gravitational wave sector generally mirror those of the Chern-Simons term but with a negative sign, with significant deviations from the metric formulation occurring only when the kinetic term approaches a sign flip.

Ali Hassan, Syksy Rasanen2026-03-19🔭 astro-ph

On the Astrophysical Origin of Binary Black Hole Subpopulations: A Tale of Three Channels?

This paper proposes that the observed binary black hole population consists of three distinct subpopulations arising from isolated binary evolution, dynamical formation in globular clusters, and higher-generation mergers, with their relative abundances estimated at approximately 79%, 14.5%, and 2.5% respectively and evolving over cosmic time.

Anarya Ray, Shirsha Mukherjee, Michael Zevin, Vicky Kalogera2026-03-19🔭 astro-ph

Topological Leptogenesis

This paper proposes "topological leptogenesis," a novel mechanism that explains the universe's lepton asymmetry by replacing sterile neutrinos with a gapped topological order sector that cancels the Standard Model's $(B-L)$ anomaly, allowing topological quantum matter excitations to decay into Standard Model particles via an intermediate gravitational leptogenesis step.

Juven Wang2026-03-18⚛️ gr-qc

Orbital eccentricity in a neutron star - black hole merger

This paper reports the first confident measurement of orbital eccentricity in the neutron star–black hole merger GW200105 using a novel waveform model that incorporates both precession and eccentricity, suggesting a formation channel driven by dynamical interactions rather than isolated binary evolution.

Gonzalo Morras, Geraint Pratten, Patricia Schmidt2026-03-18⚛️ gr-qc

Observational signatures of quantum-corrected RN blackhole

By analyzing the interplay between electric charge and quantum corrections in Reissner-Nordström black holes, this study uses strong-field lensing and Event Horizon Telescope data to constrain the dimensionless quantum parameter $\Pi$ to be less than approximately 0.7, thereby establishing a phenomenological limit on Planck-scale spacetime modifications.

Nikko John Leo S. Lobos, Virginia C. Fernandez2026-03-18⚛️ gr-qc

Quest for particles production in the plane gravitational wave spacetime

This paper demonstrates through closed-form Green's functions and multiple calculation methods that massless particles are not produced in plane gravitational wave spacetime, thereby resolving apparent contradictions with earlier predictions of particle creation based on Bogolyubov coefficients.

Nail Khusnutdinov2026-03-18⚛️ gr-qc

Observational bounds on Dark Matter Admixed Neutron Stars from Gravitational Wave Data

This paper utilizes real gravitational-wave data from events like GW230529 and GW190814 to establish novel observational constraints on the fraction and particle mass of dark matter admixed within neutron stars, revealing that while some events are consistent with a dark matter core, others may accommodate a dark matter halo configuration.

Rafael M. Santos, Rafael C. Nunes, Jaziel G. Coelho, Jose C. N. de Araujo2026-03-18⚛️ gr-qc

The Missing Multipole Problem: Investigating biases from model starting frequency in gravitational-wave analyses

This paper demonstrates that using gravitational-wave waveform models with inappropriate starting frequencies can lead to biased source property inference for high-mass, asymmetric binary black hole systems, particularly when signal-to-noise ratios are high enough for systematic errors to dominate statistical uncertainties.

Ryan Ursell, Charlie Hoy, Ian Harry, Laura K. Nuttall2026-03-18⚛️ gr-qc

Low-finesse scattering and non-stationary dispersive dynamics of gravitational wave echoes

This paper demonstrates that low-finesse gravitational wave echoes from a weak potential barrier outside a Schwarzschild black hole are best modeled as non-stationary transient scattering signals rather than steady-state resonances, leading to the derivation of an analytical template that captures key dynamic features like arrival time gliding and frequency drift.

Han-Wen Hu, Cheng-Jun Fang, Zong-Kuan Guo2026-03-18⚛️ gr-qc

Two descriptions of dark matter around a black hole: photon sphere, shadow, and lensing

This paper compares the vacuum and Einstein cluster models of anisotropic dark matter around a black hole, revealing that the Einstein cluster model produces a more significant deviation in the shadow radius and a distinctive lensing phenomenon compared to the standard Schwarzschild solution.

M. F. Fauzi, H. S. Ramadhan, A. Sulaksono2026-03-18⚛️ gr-qc

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