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.

Unified dynamical system formulations for $f(R,ϕ,X)$ gravity with applications to nonminimal derivative coupling and $R^2$ -Higgs inflation

This paper presents two dynamical system formulations for generic $f(R, \phi, X)$ gravity, demonstrating that while the first approach struggles with non-hyperbolic fixed points in a Non-Minimal Derivative Coupling toy model, the second formulation successfully analyzes the complex phase space of mixed $R^2$ -Higgs inflation by correctly recovering known limits and providing illustrative phase portraits.

Saikat Chakraborty, Sergio E. Jorás, Alberto Saa2026-03-20⚛️ gr-qc

When do real observers resolve de Sitter's imaginary problem?

This paper establishes that real observers can only resolve the imaginary phase obstructing de Sitter entropy counting if they are "gravitational observers" whose fluctuations share the negative modes of the conformal factor, as mere information-bearing capabilities are insufficient to factorize the topological sector responsible for the phase.

Ahmed Farag Ali2026-03-20⚛️ hep-th

More on near-horizon charges black holes with gravitational hair in three dimensions

This paper revises the covariant phase-space method for gravitational theories with up to quartic Riemann tensor terms and applies these results to derive near-horizon charges and verify the first law of thermodynamics for rotating BTZ and hairy black holes in three-dimensional higher-curvature gravity.

Seyed Naseh Sajadi, Supakchai Ponglertsakul, Julio Oliva2026-03-20⚛️ gr-qc

Fluxes of Generic Extreme-Mass-Ratio Inspirals with a Spinning Secondary

This paper derives orbit-averaged evolution equations and constructs waveforms for extreme-mass-ratio inspirals with a spinning secondary in a Kerr background under the linear-spin approximation, providing a framework to incorporate secondary spin effects into gravitational-wave models for future space-based observatories.

Qiuxin Cui, Wen-Biao Han2026-03-20⚛️ gr-qc

On the concept of simultaneity in relativity

This paper refutes Spavieri et al.'s claim that Wang et al.'s interferometric experiment disproves special relativity by demonstrating that their argument relies on circular reasoning and constitutes a logical fallacy.

Justo Pastor Lambare2026-03-20✓ Author reviewed ⓘ⚛️ gr-qc

Tetrads in SU(N) Yang-Mills geometrodynamics

This paper extends the coupling of internal symmetry groups to the gravitational field from SU(3) to general SU(N) symmetries in four-dimensional curved spacetimes by introducing new tetrads and proving theorems regarding the isomorphism between local gauge groups and tetrad transformation groups.

Alcides Garat2026-03-20⚛️ gr-qc

Probing Kerr black hole in a uniform Bertotti-Robinson magnetic field through astrophysical quasi-periodic oscillations

This study investigates the impact of a uniform Bertotti-Robinson magnetic field on a Kerr black hole by analyzing high-frequency quasi-periodic oscillations in X-ray binaries, using Bayesian inference to constrain the magnetic field parameter and examining its subtle effects on orbital dynamics and accretion disk properties.

Hamza Rehman, Sanjar Shaymatov, Saddam Hussain, Tao Zhu2026-03-20⚛️ gr-qc

Branching Universes

This paper proposes a testable framework of spatially constrained vector fields suggesting our Universe is one branch among many, which modifies gravitational wave dispersion and tensor perturbations while remaining consistent with stealth black hole solutions and solar system experiments.

Anamaria Hell, Tatsuya Daniel2026-03-20⚛️ gr-qc

High-Frequency Gravitational Waves from Phase Transitions in Nascent Neutron Stars

The paper proposes that the formation of deconfined quark matter cores in nascent neutron stars during galactic supernovae could emit high-frequency gravitational waves in the MHz band, offering a novel avenue for testing quantum chromodynamics using high-frequency detectors.

Katarina Bleau, Joachim Kopp, Jiheon Lee, Jorinde van de Vis2026-03-20⚛️ gr-qc

A menagerie of Schwarzians: coadjoint orbits of Virasoro and near-dS $_2$ quantum gravity

This paper presents a complete classification of generalized Schwarzian theories as integrals over Virasoro coadjoint orbits, demonstrating their correspondence to near-dS $_2$ gravity and providing exact solutions for their oscillatory path integrals despite inherent ambiguities in defining quantum fluctuations.

Henry Maxfield2026-03-20⚛️ gr-qc

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gr-qc

Unified dynamical system formulations for f(R,ϕ,X)f(R,ϕ,X)f(R,ϕ,X) gravity with applications to nonminimal derivative coupling and R2R^2R2-Higgs inflation