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.

⚛️ general relativity

Thermodynamic stability and geometric thermodynamics of charged black holes in Rastall-massive gravity under quintessence

This paper derives a new charged black hole solution in Rastall-massive gravity with a quintessence field, demonstrating that its thermodynamic stability and Van der Waals-like phase transitions are consistent with both standard thermodynamic analysis and geometric thermodynamics, while linking critical transitions to observable photon sphere properties.

Mohamed Chabab, Samir Iraoui, Hicham Sriba2026-08-11

🔢 mathematics

The explicit Lorentz invariant QED pair production rates from superstrings

This paper derives explicit Lorentz invariant QED pair production rates for scalars, spinors, and vectors in diverse dimensions by taking the field theory limit of open string pair production between two parallel Dp-branes in Type II superstrings.

J. X. Lu2026-08-11

⚛️ quantum physics

How to Test Bell Nonlocality for Gravity?

This paper proposes a loophole-free experimental protocol using entangled spins coupled to spatially superposed masses to generate and locally measure entangled gravitational fields, thereby providing the first device-independent method to certify the quantum nature of gravity through Bell nonlocality.

Debarshi Das, Mir Alimuddin, Simon Storz, Yiwen Chu, Sougato Bose2026-08-11

⚛️ phenomenology

The Challenge of Detecting Quantum Nature of Gravitational Waves

This paper demonstrates that while preparing a detector in a squeezed state can theoretically distinguish quantum gravitational waves from classical fields by generating a squeezing witness, the extremely weak coupling between gravitons and detectors ultimately renders this signature unobservable in practice.

Yu Miyauchi, Hidetoshi Omiya, Atsuhisa Ota, Hiroki Takeda, Takahiro Tanaka2026-08-11

⚛️ general relativity

Scalaron-modified null focusing and radial monotonicity in static f(R) gravity

This paper derives an exact radial monotonicity law for static, spherically symmetric spacetimes in metric $f(R)$ gravity, establishing a model-independent diagnostic that links the sign of an effective convergence numerator to the monotonicity of the metric ratio $B/A$ and reveals specific constraints and inconsistencies in known solutions like Schwarzschild–de Sitter and power-law families.

Maickol Muñoz-Palma, Francisco S. N. Lobo, Jean Báez Cuevas, Francisco Tello-Ortiz2026-08-11

⚛️ general relativity

Semilinear wave equations in homothetic hyperboloidal coordinates and tail decay

This paper introduces a homothetic hyperboloidal coordinate system for semilinear wave equations in Minkowski spacetime that resolves numerical challenges in capturing late-time tail decay by maintaining a smooth radial profile, enabling efficient pseudospectral simulations that confirm generic decay rates and provide evidence for a faster nongeneric decay at null infinity.

Anıl Zenginoğlu, Sebastiano Bernuzzi, Andrea Nützi2026-08-11

⚛️ phenomenology

Matrix Multiverses Meet Multiple Mythologies

This paper proposes a model where asymptotically de Sitter universes reside inside black holes within a maximally entropic flat universe, arguing that these universes equilibrate on timescales exponentially shorter than de Sitter recurrence times, thereby rendering their internal structure undetectable and potentially explaining the selection of unnatural cosmological constants through the requirement for intelligent life.

Sidan A, Tom Banks, Willy Fischler2026-08-11

⚛️ general relativity

Modified Double Copy for Quasitopological Gravity with Matter

This paper extends the modified double-copy construction to quasitopological gravity coupled to various matter sources, demonstrating how spherically symmetric solutions in $D$ dimensions can be generated from auxiliary gauge fields in a flat $(D+1)$ -dimensional spacetime.

Valeri P. Frolov2026-08-11

⚛️ nuclear theory

Hadron-quark phase transitions along proto-neutron-star evolution

This paper investigates the evolution of proto-hybrid stars by deriving hot hybrid equations of state under various charge conservation and neutrino trapping conditions, revealing that the early stages of a hybrid star's life critically influence its maximum gravitational mass in later stages.

P. Laskos-Patkos, P. S. Koliogiannis, Ch. C. Moustakidis2026-08-11

⚛️ general relativity

Detector Dependence of Inspiral Christodoulou Gravitational Wave Memory in Binary Black Hole Systems

This paper introduces GWMemoryLab, a modular numerical framework that investigates the detector dependence of Christodoulou gravitational-wave memory in non-spinning binary black hole inspirals, revealing that an optimal total mass exists to maximize observable memory based on a detector's low-frequency cutoff due to the competition between increasing luminosity and decreasing inspiral duration.

Jiswin Varghese, Jyothipriya M Shaji, Lyjo K Joseph2026-08-11

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