⚛️ Category

gr-qc

3826 papers

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

Coordinate Independence of the Schwarzschild Black Hole Accretion Vlasov Gas Model

This paper demonstrates that while individual components of the stress-energy tensor and particle current depend on the coordinate system, the physical properties of Vlasov gas accretion onto a Schwarzschild black hole—including density, pressure, and accretion rates—are coordinate-independent, with lower-energy particles preferentially accreted, resulting in a mean energy of m0+kBTm_0+k_BT and a specific entropy reduction of 32kB\frac{3}{2}k_B compared to the global average.

Ping Li, Jun Cheng, Jiang-he Yang2026-07-23
⚛️ general relativity

Quasinormal modes of the Kazakov--Solodukhin quantum-corrected black hole: a spectral analysis

This paper employs a high-precision Chebyshev spectral method to compute and analyze the quasinormal modes of the Kazakov--Solodukhin quantum-corrected black hole across various perturbation sectors, confirming the stability of the spacetime while identifying distinct purely imaginary overdamped branches and near-extremal spectral ladders.

Davide Batic, Denys Dutykh, Mark Sukaiti2026-07-23
⚛️ general relativity

Geometry-Induced Termination of the Repetitive Penrose Process in Rotating Simpson-Visser Black Holes

This paper demonstrates that in rotating Simpson-Visser black holes, the repetitive Penrose process can be terminated by a geometry-induced condition where the regularization parameter forces the spacetime out of the two-horizon black hole regime before the conventional spin limit is reached, thereby reducing the cumulative energy extraction and efficiency compared to standard Kerr black holes.

Mohammad Ali S. Afshar, Mohammad Reza Alipour, Saeed Noori Gashti, J. Sadeghi2026-07-23
⚛️ general relativity

Noise reduction in suspension control with photon-pressure actuator for CHRONOS gravitational wave detector

This paper proposes and evaluates a photon-pressure actuator for the CHRONOS gravitational wave detector, demonstrating its ability to significantly reduce low-frequency actuation noise from seismic and magnetic sources while providing sufficient torque and calibration accuracy to enhance sub-Hz sensitivity.

Daiki Tanabe, Yuki Inoue, Mario Juvenal S. Onglao III2026-07-23
⚛️ general relativity

Cosmological horizon thermodynamics in Gauss-Bonnet quasi-dilaton Massive Gravity

This paper demonstrates that Gauss-Bonnet quasi-dilaton massive gravity is a consistent modified gravity theory by deriving modified Friedmann equations and showing that both the generalized second law of thermodynamics and the holographic entropy bound are satisfied for the cosmological apparent horizon under specific energy and stability constraints.

Sobhan Kazempour, Orlando Luongo, Sabahat, Sichun Sun, Chengye Yu2026-07-23
⚛️ general relativity

Beyond j=1j=1: Observational Constraints on Almost-Λ\LambdaCDM Cosmologies

This paper uses Markov Chain Monte Carlo analyses of recent DESI, Planck, and supernova data to constrain three phenomenological "almost-Λ\LambdaCDM" cosmographic models, finding that current observations tightly favor the standard Λ\LambdaCDM kinematic signature (j≈1j \approx 1) and a smooth, non-phantom dark-energy evolution while demonstrating the statistical competitiveness of this model-independent framework.

Jess Worsley, Saikat Chakraborty, Peter Dunsby2026-07-23
⚛️ general relativity

A theoretical prediction for the dipole in nearby distances using cosmography

This paper develops and validates a model-independent cosmographic method to predict the dipole in luminosity distances caused by nearby inhomogeneities, demonstrating through numerical relativity simulations that it significantly improves upon naive predictions for redshifts up to z≈0.07z \approx 0.07 in smooth fields and z≈0.02z \approx 0.02 in non-linear regimes.

Hayley J. Macpherson, Asta Heinesen2026-07-22