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.

⚛️ general relativity

Analytic weak-signal approximation of the Bayes factor for continuous gravitational waves

This paper introduces a new, fully analytic weak-signal approximation of the Bayes factor for continuous gravitational waves that, by modeling the amplitude prior as a half-Gaussian distribution, achieves computational efficiency comparable to the $\mathcal{F}$ -statistic while demonstrating state-of-the-art or improved sensitivity across a wide range of coherent and semi-coherent search segment lengths.

Reinhard Prix2026-02-27

⚛️ general relativity

Radiated Angular Momentum from Spinning Black Hole Scattering Trajectories

Using worldline quantum field theory and modern diagrammatic techniques, this paper derives spinning black hole scattering trajectories up to quadratic order in spins and establishes a new framework for computing radiated angular momentum up to 2PM order, thereby advancing high-precision analytical gravitational wave physics.

Gustav Mogull, Jan Plefka, Kathrin Stoldt2026-02-27

🔢 mathematics

Accretion of a Vlasov gas by a Kerr black hole

This paper investigates the accretion of a collisionless relativistic gas by a rotating Kerr black hole, deriving closed integral expressions for physical observables and demonstrating that while black hole rotation significantly reduces the angular momentum accretion rate, it exerts a smaller, analytically predictable influence on mass and energy accretion rates.

Patryk Mach, Mehrab Momennia, Olivier Sarbach2026-02-27

🔢 mathematics

Bondi-type accretion onto a Kerr black hole in the kinetic regime

This paper derives an exact kinetic solution for stationary Bondi-type accretion onto a Kerr black hole, providing explicit formulas for mass, energy, and angular momentum accretion rates to analyze black hole growth and spin-down under constant or cosmologically decreasing ambient energy densities.

Patryk Mach, Mehrab Momennia, Olivier Sarbach2026-02-27

⚛️ phenomenology

A quantum information method for early universe with non-trivial sound speed

This study employs open quantum system methods and Arnoldi iterations to analyze Krylov complexity and entropy in the early universe, revealing that while non-trivial sound speed yields similar complexity trends to the standard case, it induces distinct entropy evolution and maximally chaotic behavior characterized by specific Lanczos coefficients.

Shi-Cheng Liu, Lei-Hua Liu, Bichu Li, Hai-Qing Zhang, Peng-Zhang He2026-02-27

⚛️ general relativity

Multi-photon ring structure of reflection-asymmetric traversable thin-shell wormholes

This paper simulates the optical appearance of reflection-asymmetric traversable thin-shell wormholes in Palatini $f(R)$ gravity, revealing that light crossing the throat creates a distinct, luminous multi-photon ring structure and a significantly reduced central shadow compared to canonical black holes, offering a potential observational signature to distinguish these exotic objects.

Caio F. B. Macedo, João Luís Rosa, Diego Rubiera-Garcia, Alejandro Rueda2026-02-27

⚛️ general relativity

Off-Equatorial Orbits around Magnetically Charged Black Holes

This paper characterizes stable, off-equatorial circular orbits around magnetically charged black holes, demonstrating that such unique trajectories—impossible in electrically charged spacetimes—exhibit significant latitude deviations and stability under synchrotron radiation, offering potential observational signatures to constrain the magnetic charge of astrophysical black holes.

Xilai Li, Loris Del Grosso, David E. Kaplan2026-02-27

⚛️ general relativity

Quasinormal modes of Schwarzschild-de Sitter black holes in semi-open systems

This paper investigates the quasinormal modes, greybody factors, and exceptional points of Schwarzschild-de Sitter black holes in semi-open systems with a partially reflective wall, utilizing Heun functions to reveal distinct mode behaviors, oscillatory greybody factors dependent on wall distance, and a second-order exceptional point characterized by mode exchange and square-root spectral deviations.

Liang-Bi Wu, Libo Xie, Li-Ming Cao, Ming-Fei Ji, Yu-Sen Zhou2026-02-27

⚛️ general relativity

Primordial Black Hole Formation in Dust-Radiation Bouncing Cosmologies

This paper establishes a unified framework for studying primordial black hole formation in dust-radiation bouncing cosmologies and demonstrates that while the curvature perturbation threshold is extremely low, the resulting abundance of primordial black holes is vanishingly small due to the significant suppression caused by radiation pressure and two-fluid collapse conditions.

Xuan Ye, Luiz Felipe Demetrio, Eduardo Jose Barroso, Shen-Feng Yan, Nelson Pinto-Neto2026-02-27

⚛️ general relativity

Dymnikova Black Hole Immersed in Perfect Fluid Dark Matter and a Cloud of Strings: Hawking Temperature, Dynamics and QPOs Analysis

This paper investigates a generalized Dymnikova black hole surrounded by perfect fluid dark matter and a cloud of strings, analyzing how these matter sources modify its thermodynamic stability, photon and particle dynamics, and quasi-periodic oscillation signatures.

Faizuddin Ahmed, Sardor Murodov, Bekzod Rahmatov, Abdelmalek Bouzenada2026-02-27

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