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

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

Holographic Quantum Foam: Theoretical Underpinnings and Observational Evidence

This paper proposes the "holographic quantum foam" (HQF) model, which predicts a dark sector governed by infinite statistics and suggests that the extreme brightness and multi-wavelength data of the recent GRB221009A event provide observational evidence for Planck-scale spacetime fluctuations manifesting as image blurring in distant sources.

Eric Steinbring, Y. Jack Ng2026-03-20⚛️ gr-qc

Black Hole--Entropy Container or Creator

This paper challenges the conventional view that black holes possess intrinsic entropy by employing a linear amplifier model to argue that black holes instead create and emit entropy during their operation, with the total emitted entropy matching the standard expression proportional to the square of the black hole's mass.

William G Unruh2026-03-20⚛️ gr-qc

Bosonic and fermionic mutual information of N-partite systems in dilaton black hole background

This study analytically investigates how the Hawking effect in a GHS dilaton black hole background influences the N-partite mutual information and relative entropy of coherence for bosonic and fermionic GHZ and W states, revealing that fermionic mutual information exceeds bosonic mutual information while the opposite trend holds for coherence, thereby highlighting the necessity of tailoring quantum resources to particle species and state structures in relativistic quantum information tasks.

Xiao-Wei Teng, Rui-Yang Xu, Hui-Chen Yang, Shu-Min Wu2026-03-20⚛️ gr-qc

Analytic Expressions for Quasinormal Modes of a Regular Black Hole Sourced by a Dehnen-Type Halo

This paper derives compact and accurate analytic expressions for the gravitational quasinormal modes of a regular black hole embedded in a Dehnen-type dark-matter halo, revealing that the axial perturbations split into non-isospectral "up" and "down" channels beyond the eikonal regime.

Zainab Malik2026-03-20⚛️ 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