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

Scalar-Tensor Symmetric Teleparallel Gravity: Reconstruct the Cosmological History with a Steep Potential

This paper investigates a scalar-non-metricity gravity model with a steep potential and power-law coupling within the symmetric teleparallel framework, demonstrating through dynamical analysis and Center Manifold Theory that it can unify early and late-time cosmic acceleration across three distinct connection branches while exhibiting a rich hierarchy of cosmological behaviors ranging from matter-dominated epochs to various singularities.

Ghulam Murtaza, Avik De, Andronikos Paliathanasis2026-09-10

⚛️ high-energy theory

Long-lived resonances of massive scalar fields in the Reissner-Nordström black-hole spacetime: Analytic treatment in the large-mass regime

This paper analytically demonstrates that a massive scalar field in the Reissner-Nordström black hole spacetime exhibits quasi-resonances with arbitrarily long lifetimes in the large-mass regime, and derives the critical mass spectrum that characterizes these long-lived resonances.

Shahar Hod2026-09-10

⚛️ general relativity

Nonlinear evolution of the ergoregion instability: Turbulence, bursts of radiation, and black hole formation

This paper numerically demonstrates that the nonlinear evolution of the ergoregion instability in a rapidly spinning boson star triggers a turbulent cascade and gravitational wave bursts, ultimately causing the star to collapse into a black hole.

Nils Siemonsen, William E. East2026-09-10

⚛️ general relativity

Effect of noise characterization on the detection of mHz stochastic gravitational waves

This paper investigates how flexible noise modeling and realistic instrumental simulations impact the detectability of millihertz stochastic gravitational-wave backgrounds by LISA, demonstrating that agnostic noise reconstruction methods enhance robustness in distinguishing signals from stochastic noise.

Nikolaos Karnesis, Quentin Baghi, Jean-Baptiste Bayle, Nikiforos Galanis2026-09-10

⚛️ general relativity

On scalar and electromagnetic perturbations of the root--Kerr object

This paper investigates scalar and electromagnetic perturbations of the root-Kerr object by deriving their confluent-Heun radial equations, establishing a Nekrasov-Shatashvili dictionary, and formulating the necessary disk/rim boundary conditions to resolve the charge-dependent scattering ambiguities inherent in the exterior solution.

Samim Akhtar2026-09-10

⚛️ general relativity

Evolving wormhole cosmology: modified Friedmann dynamics and observational constraints

This paper proposes and validates an evolving wormhole cosmological model derived from a Morris-Thorne metric that yields a modified Friedmann equation, demonstrating its consistency with diverse observational datasets while offering a distinct geometric observable to differentiate wormhole spacetimes from standard dark energy models.

Aritra Sanyal, Kazuharu Bamba, Prabir Rudra2026-09-10

⚛️ general relativity

Constraints on Scalar--Tensor--Vector Gravity Theory Parameters Inferred from Quasiperiodic Oscillations

This paper utilizes twin kilohertz quasiperiodic oscillations from twelve accreting compact objects to constrain the parameters of Scalar--Tensor--Vector Gravity (STVG), revealing that while charged STVG solutions best fit neutron star data, the orbital dynamics depend only on two effective mass and charge combinations, thereby setting model-independent limits on what QPO timing alone can measure.

Marco Muccino, Kuantay Boshkayev, Binay Prakash Akhouri, Izzet Sakallı, Yassine Sekhmani2026-09-10

🔭 astrophysics

Decoding the Imprints of Energy-Momentum Squared Gravity in Neutron Stars with Machine Learning Analysis

This study demonstrates that supervised machine learning classifiers, particularly Random Forest, can achieve over 99% accuracy in distinguishing between General Relativity and Energy-Momentum Squared Gravity models using neutron star observables (mass, radius, tidal deformability, and oscillation frequency), even after applying observational constraints.

Sayantan Ghosh, Premachand Mahapatra, Dipti Deb2026-09-10

⚛️ general relativity

Gravitational Radiation from Shockwave Scattering in the Self-Force EFT

This paper utilizes the Self-Force Effective Field Theory to analyze high-energy collisions involving gravitational shockwaves, deriving an exact all-orders Post-Minkowskian waveform for massless-massless scattering that demonstrates the vanishing of recoil operators and proves the ultraviolet finiteness of the radiated energy spectrum in the collinear super-Planckian regime.

Emanuele Rosi2026-09-10

⚛️ general relativity

Perturbations of Charged Black Holes with Higher-Order Interactions

This paper analyzes the linear gravitational perturbations and quasinormal-mode spectra of electrically and magnetically charged black holes within a four-derivative Horndeski theory, confirming their stability against exponential growth and identifying distinctive spectral features induced by the higher-order interactions.

Oleksandr S. Stashko, Roman A. Konoplya, Mark P. Hertzberg2026-09-10

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