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.

From negative to positive cosmological constant through decreasing temperature of the Universe: connection with string theory and spacetime foliation results

This paper proposes a modified thermal Renormalization Group framework, where a constant dimensionless temperature drives the cosmological constant to transition from negative (consistent with string theory at high temperatures) to positive (consistent with observations at low temperatures), thereby resolving the discrepancy between theoretical predictions and the observed accelerating expansion of the Universe.

E. N. Nyergesy, I. G. Márián, A. Trombettoni, I. Nándori2026-03-31⚛️ gr-qc

Role of dynamical early dark energy in Hubble tension through warm inflation

This paper proposes that dissipation from the thermal bath in minimal warm inflation mimics dynamical early dark energy, thereby increasing the present-day Hubble parameter and offering a unified framework to reconcile early and late-time estimates of $H_0$ while alleviating the Hubble tension.

Anupama B2026-03-31⚛️ gr-qc

Foundations of Carrollian Geometry

This review establishes a comprehensive framework for Carrollian geometry by systematically developing the metric, connection, and curvature structures of degenerate manifolds, demonstrating their intrinsic equivalence to the induced geometry of null hypersurfaces via the rigging technique, and extending the formalism to unify the geometric description of hypersurfaces across all causal characters.

Luca Ciambelli, Puttarak Jai-akson2026-03-31⚛️ hep-th

Hawking radiation: black hole vs de Sitter

This paper argues that while the Gibbons-Hawking entropy formula ( $S=A/4G$ ) correctly describes the Hubble volume entropy in (3+1) spacetime by matching local thermodynamic integration, this equivalence breaks down in general $d+1$ dimensions where the local entropy density yields a modified result of $S=(d-1)A/8G$ .

G. E. Volovik2026-03-31⚛️ gr-qc

Long-lived modes and grey-body factors of massive fields in quantum-corrected (Hayward) black holes

This paper investigates massive scalar fields in quantum-corrected Hayward black holes, revealing that field mass induces long-lived quasi-resonances and power-law oscillatory tails while shifting grey-body transmission peaks to higher frequencies, all while maintaining a robust correspondence between quasinormal modes and grey-body factors at high multipole numbers.

Alexey Dubinsky2026-03-31⚛️ gr-qc

Encounter between an extended hyperelastic body and a Schwarzschild black hole with quadrupole-order effects

This paper models the general relativistic interaction between a small hyperelastic sphere and a Schwarzschild black hole using an independent finite element scheme, revealing that quadrupole-order effects lead to significant orbital energy loss, spin changes, and the eventual capture of the body into a highly eccentric orbit.

Nishita Jadoo, J. David Brown, Charles R. Evans2026-03-31⚛️ gr-qc

Revisiting the Hubble tension problem in the framework of holographic dark energy

This paper systematically analyzes six holographic dark energy models against multiple observational datasets, concluding that while models using the Hubble scale as an infrared cutoff fail to resolve the Hubble tension, those utilizing the future event horizon can partially alleviate it.

Jun-Xian Li, Shuang Wang2026-03-31⚛️ gr-qc

IR/UV mixing from higher-order interactions in a Scalar Field

This paper proposes a proof-of-principle mechanism for resolving the cosmological constant problem by introducing a momentum-dependent non-linear interaction in a 4D scalar field theory that breaks translational invariance, thereby generating a dynamically lowered UV cutoff for the Universe while preserving the Planck-scale cutoff required for local particle physics experiments.

Satish Ramakrishna2026-03-31⚛️ hep-th

Gravitational aspects of a new bumblebee black hole

This paper investigates the gravitational properties of a new bumblebee black hole solution by analyzing its geometry, geodesic motion, shadow, perturbations, and lensing effects to derive constraints on Lorentz-violating parameters from Solar System experiments.

A. A. Araújo Filho, N. Heidari, Iarley P. Lobo, V. B. Bezerra2026-03-31⚛️ gr-qc

Near-horizon gravitational perturbations of rotating black holes

This paper resolves longstanding divergence issues in near-horizon gravitational perturbation calculations for rotating black holes by constructing a nonsingular source term within the generalized Sasaki-Nakamura formalism, enabling the study of horizon dynamics and energy flux from events like ultrarelativistic plunges and extreme mass-ratio inspirals.

Rico K. L. Lo, Yucheng Yin2026-03-31⚛️ gr-qc

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