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.

Plummer Dark Matter Black Hole with Topological Defects: Shadow, Greybody Factors, Quasinormal Modes, and Thermodynamics

This paper presents a static, spherically symmetric black hole solution embedded in a Plummer dark matter halo and a Letelier cloud of strings, systematically analyzing its geometric properties, shadow, deflection angle, scalar perturbations, and thermodynamics to demonstrate that the string-cloud tension parameter $\alpha$ drives leading-order modifications to all observables while the dark matter halo density $\rho_0$ provides only subdominant corrections.

Ahmad Al-Badawi, Faizuddin Ahmed, İzzet Sakallı2026-04-03⚛️ gr-qc

A framework for creating galaxy models in the geometry of the conservation group with dark matter halos and flat rotation curves

This paper presents a framework for modeling galaxies within the geometry of the conservation group by dividing them into baryonic, dark matter, and outer regions to demonstrate how the theory naturally produces flat rotation curves and continuous models consistent with the radial acceleration relation.

Edward Lee Green2026-04-03⚛️ gr-qc

Is Gravity Always Enough to Yield a Classical Universe?

This paper challenges the conventional view that gravity and inflation always ensure a classical universe by demonstrating that non-linear dynamics beyond slow roll can preserve non-classical features in cosmic structure, proposing Wigner function-based phase-space analysis as a method to detect these potential quantum signatures.

Aurora Ireland2026-04-03⚛️ gr-qc

High-frequency gravitational wave transients from superradiance

This paper presents a unified theoretical framework for high-frequency gravitational wave transients from ultralight boson clouds around primordial black holes, concluding that while binary-driven signals are theoretically possible, their extreme weakness and low event rates render them undetectable by current experiments, thereby highlighting the need for significantly improved future high-frequency gravitational-wave searches.

Henry Su, Lucas Brown, Christopher Ewasiuk, Stefano Profumo2026-04-03⚛️ gr-qc

The Galactic Halo Rotation by Weyl Incorporated Gravity

This paper extends a Weyl-coupled gravity model, previously validated with constant density assumptions, to realistic radially varying density profiles to explain the rotation curves of the Milky Way, M31, and seven local edge-on spiral galaxies without invoking non-baryonic dark matter.

Asghar Qadir, Ashmal Shahid, Noraiz Tahir2026-04-03🔭 astro-ph

Smoluchowski Coagulation Equation and the Evolution of Primordial Black Hole Clusters

This paper presents a comprehensive simulation of primordial black hole (PBH) cluster evolution using the Smoluchowski coagulation equation and Monte Carlo methods to model merger dynamics with and without mass segregation, thereby determining runaway timescales and mass population evolution to explain high-redshift supermassive black holes observed by JWST.

Borui Zhang, Wei-Xiang Feng, Haipeng An2026-04-03🔭 astro-ph

Radial fall: the gravitational waveform up to the second-and-half Post-Newtonian order

This paper applies the Multipolar Post-Minkowskian formalism to compute the gravitational waveform, energy, and linear momentum emissions for a two-body system in radial fall up to the 2.5 Post-Newtonian order, while also evaluating inertial force contributions at the 4.5PN level to facilitate future high-precision calculations.

Donato Bini, Giorgio Di Russo2026-04-03⚛️ gr-qc

Cosmological Constraints on the Generalized Uncertainty Principle from Redshift-Space Distortions

This study uses redshift-space distortion measurements combined with background cosmological data to constrain the Generalized Uncertainty Principle's deformation parameter $\beta$ , revealing a systematically negative value that allows for a weak-to-strong observational preference for the modified model over standard $\Lambda$ CDM depending on the specific supernova dataset used.

Andronikos Paliathanasis2026-04-03🔭 astro-ph

Asymptotic Symmetries of the Holst Action at Spatial Infinity: Including Supertranslations

This paper establishes a consistent first-order formalism for General Relativity at spatial infinity using the Holst action, demonstrating that relaxed boundary conditions and specific parity constraints allow for the full BMS group including supertranslations while proving that the Immirzi parameter modifies Lorentz charges but leaves supertranslation charges invariant.

Sepideh Bakhoda, Hongguang Liu2026-04-03⚛️ gr-qc

Strong gravitational-wave lensing posterior odds

This paper unifies frequentist and Bayesian approaches to identifying strongly lensed gravitational-wave events by deriving posterior odds that demonstrate how selection effects, while influencing the Bayes factor, ultimately cancel out to yield a detection metric insensitive to the total number of events in the catalogue.

Otto A. Hannuksela, K. Haris, Justin Janquart, Harsh Narola, Hemantakumar Phurailatpam, Jolien D. E. Creighton, Chris Van Den Broeck2026-04-02⚛️ gr-qc

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