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.

Technically Natural Suppression of Fifth Force

This paper proposes a Z2Z_2-symmetric mirror extension of the Standard Model within a bi-conformal gravity framework where spontaneous scale invariance breaking generates a light scalaron that naturally suppresses fifth-force couplings via symmetry, predicting a specific correlation between the force strength and scalar mass that aligns with next-generation experimental targets without relying on environmental screening mechanisms.

Kensuke Homma, Taishi Katsuragawa, Shinya Matsuzaki2026-04-23⚛️ hep-ex

The phase diagram of confining holographic theories on constant curvature manifolds in the presence of a θ\theta-angle

This paper investigates the phase diagrams of confining holographic theories on constant curvature manifolds with a θ\theta-angle, revealing that negative curvature manifolds exhibit no phase transitions while positive curvature manifolds display both first and second-order phase transitions, alongside a proof of a holographic Vafa-Witten-like theorem for the θ=0\theta=0 case.

Ahmad Ghodsi, Elias Kiritsis, Francesco Nitti2026-04-23⚛️ hep-th

Time Like Geodesics of Regular Black Holes with Scalar Hair

This paper investigates the timelike geodesics of massive test particles in asymptotically flat regular black holes supported by a phantom scalar field, demonstrating how the scalar charge deforms orbital dynamics, modifies critical radii like the ISCO, and induces perihelion precession corrections that can be constrained by Solar System observations.

P. A. González, Marco Olivares, Eleftherios Papantonopoulos, Yerko Vásquez2026-04-23⚛️ gr-qc