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.

Stability analysis and double critical phenomenon in the Einstein-Maxwell-scalar theory

This paper investigates the stability and phase transitions in a holographic superfluid model with higher-order self-interactions and non-minimal coupling, revealing that thermodynamic and dynamical stabilities are consistent and demonstrating a novel double critical phenomenon where increasing the non-minimal coupling parameter causes the system to transition from a first-order phase transition region to a supercritical region and then back to a first-order region.

Zi-Qiang Zhao, Mei-Ling Yan, Zhang-Yu Nie, Jing-Fei Zhang, Xin Zhang2026-04-02⚛️ gr-qc

Nonlinearities in Gravity: Gravitational Wave Ringdown

This paper summarizes the properties and latest developments of quadratic nonlinear effects in gravitational wave ringdown models, highlighting their potential detectability by next-generation instruments and their utility for new consistency tests of general relativity.

Macarena Lagos2026-04-02⚛️ gr-qc

Nonlinear Lattice Framework for Inflation: Bridging stochastic inflation and the $\delta{N}$ formalism

This paper introduces a computationally efficient nonlinear lattice framework for single-field inflation that bridges stochastic inflation and the $\delta N$ formalism, successfully capturing complex nonlinear dynamics such as non-Gaussianity growth and estimator separation during ultra-slow-roll phases in Starobinsky's model.

Pankaj Saha, Yuichiro Tada, Yuko Urakawa2026-04-02⚛️ gr-qc

Time evolution of semiclassical states in the one-vertex model of quantum-reduced loop gravity

This paper numerically demonstrates that semiclassical states in the one-vertex model of quantum-reduced loop gravity evolve to closely match classical homogeneous and isotropic cosmology, while also exhibiting a quantum-induced "bounce" that halts gravitational contraction and initiates expansion.

Ilkka Mäkinen2026-04-02⚛️ gr-qc

Universal Non-Gaussian Signatures from Transient Instabilities

This paper identifies universal non-Gaussian signatures in the inflationary bispectrum arising from transient tachyonic instabilities of entropic fluctuations, demonstrating that exact numerical calculations reveal distinctive features like magnified folded configurations and tachyonic resonances that cannot be fully captured by single-field effective descriptions, while providing new templates for observational constraints on non-geodesic inflationary attractors.

Shuntaro Aoki, Diederik Roest, Denis Werth2026-04-02⚛️ gr-qc

The Semiclassical Einstein-Klein-Gordon System: Asymptotic Analysis of Minkowski Spacetime

This paper establishes the linear instability of the semiclassical Einstein-Klein-Klein-Gordon system around Minkowski spacetime, demonstrating that quantum backreaction drives metric perturbations to grow exponentially toward a de Sitter cosmological spacetime with a universal expansion scale compatible with observed cosmic expansion.

Stefano Galanda, Paolo Meda, Simone Murro, Nicola Pinamonti, Gabriel Schmid2026-04-02🔢 math-ph

Universal $T$ -matrices for quantum Poincaré groups: contractions and quantum reference frames

This paper develops a contraction theory for universal $T$ -matrices of quantum groups to derive a new (1+1) centrally extended quantum Poincaré algebra whose dual form naturally describes relativistic quantum reference frame transformations and contracts to the known Galilei $T$ -matrix for non-relativistic frames.

Angel Ballesteros, Diego Fernandez-Silvestre, Ivan Gutierrez-Sagredo2026-04-02🔢 math-ph

Thermodynamics, Shadow, and Quasinormal Modes of AdS Ayón--Beato--García Massive Black Hole

This paper investigates the thermodynamics, photon sphere, shadow, and dynamical stability of an AdS Ayón-Beato-García massive black hole, revealing how graviton mass and magnetic charge influence its Gibbs free energy, shadow radius, and quasinormal modes while confirming its overall stability.

Dharm Veer Singh, Sudhaker Upadhyay, Amit Kumar, Yerlan Myrzakulov, Kairat Myrzakulov, Himanshu Kumar Sudhanshu2026-04-02⚛️ gr-qc

Curvature-induced electroweak symmetry breaking and phase transition of a Higgs-portal dark scalar field

This paper presents an overview of a study demonstrating that a curvature-induced phase transition of a non-minimally coupled Higgs-portal dark scalar field during the transition from inflation to kination can trigger electroweak symmetry breaking and generate gravitational waves with amplitudes enhanced by kination, potentially making them detectable by future experiments within specific parameter spaces.

Andreas Mantziris2026-04-02⚛️ gr-qc

Cosmology from asymptotically safe Proca theories

This paper initiates a program to investigate the ultraviolet completion of generalised Proca theories within the asymptotic safety paradigm, identifying non-perturbative fixed points that demonstrate the renormalisability of vector-tensor theories and constrain viable late-time cosmological scenarios.

Carlos Pastor-Marcos, Lavinia Heisenberg, Álvaro Pastor-Gutiérrez, Jan M. Pawlowski, Manuel Reichert2026-04-02⚛️ gr-qc

← Previous Next →

gr-qc