⚛️ Category

gr-qc

2489 papers

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.

Higher-curvature corrections and the endpoint of black hole evaporation in gravitational effective field theory

This paper demonstrates that the apparent freeze-out of black hole evaporation at a finite mass scale, induced by cubic curvature corrections in gravitational effective field theory, is not a physical prediction of a stable remnant but rather a dynamical signal marking the breakdown of the effective field theory when higher-order terms become unsuppressed and Planckian curvature is reached.

Lorens F. Niehof, Sjors Heefer, Andrea Fuster, Federico Toschi2026-05-29⚛️ gr-qc

Scalar field perturbations in Non-commutative Schwarzschild spacetime: Comparative analysis and Upper bound on non-commutativity

This paper conducts a comparative analysis of scalar field perturbations in non-commutative Schwarzschild spacetime under two distinct non-minimal curvature couplings, revealing their nearly identical fundamental quasi-normal mode spectra, contrasting stability behaviors at different multipolar numbers as coupling constants increase, and establishing an upper bound on the non-commutative parameter based on stability conditions.

Majid Karimabadi, Davood Mahdavian Yekta, S. A. Alavi2026-05-29⚛️ gr-qc

Observational constraints on the modified cosmology inspired by string T-duality

This paper derives modified Friedmann equations from string T-duality-inspired zero-point length corrections and uses Bayesian analysis of diverse late-time cosmological data to constrain the deviation parameter to β≲10−3\beta \lesssim 10^{-3}, demonstrating that current observations are consistent with the standard Λ\LambdaCDM model while highlighting the potential of future surveys to test quantum-gravity effects.

G. G. Luciano, A. Paliathanasis, A. Sheykhi2026-05-29⚛️ gr-qc

Topological Signatures and Geometrothermodynamics of Critical Phenomena in Regularized Maxwell Black Holes

This paper demonstrates that in RegMax gravity, the coupling parameter α\alpha governs a topological phase transition in charged black holes, where exceeding a critical threshold induces second-order criticality and negative Ruppeiner curvature at small scales, linking these exotic thermodynamic features to increased violations of classical energy conditions.

Y. Sekhmani, G. G. Luciano, S. K. Maurya, J. Rayimbaev, M. K. Jasim, I. Ibragimov, S. Muminov2026-05-29⚛️ gr-qc

Hints Beyond ΛΛCDM from Barrow and Tsallis Holographic Dark Energy with GO cutoff

This paper investigates Barrow and Tsallis Holographic Dark Energy models with a Granda-Oliveros infrared cutoff, demonstrating through Bayesian analysis of recent cosmological data that these generalized entropy frameworks are consistent with observations and offer a competitive, statistically preferred alternative to the standard Λ\LambdaCDM model.

G. G. Luciano, A. Paliathanasis, G. Leon, A. Sheykhi, M. Motaghi2026-05-29⚛️ gr-qc

Superluminal Transformations and Indeterminism

This paper presents a theory-independent no-go theorem demonstrating that any framework incorporating superluminal transformations must abandon at least one fundamental assumption—such as finite information, time-symmetric content, past memory, or preferred causal ordering—thereby implying that ontic indeterminacy arising from such transformations stems from unbounded informational content rather than finite information.

Amrapali Sen, Flavio Del Santo2026-05-29⚛️ gr-qc

Forecasting Constraints on Cosmology and Modified Gravitational-wave Propagation by Combining Strongly Lensed Gravitational Waves and Galaxy Surveys

This paper presents the first analysis of time-delay cosmography using doubly lensed gravitational wave events, forecasting that while current and near-future detector networks (LVK O5/post-O5) will yield few qualified events, the future Einstein Telescope and Cosmic Explorer network will provide enough detections to precisely constrain the Hubble constant and dynamical dark energy parameters while simultaneously testing modified gravitational-wave propagation.

Anson Chen, Jun Zhang2026-05-29⚛️ gr-qc