⚛️ Category

gr-qc

3826 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.

⚛️ high-energy theory

Quantum Horizon and Quantum Membrane Paradigm from Black Hole Quantum Mechanics

This paper develops a microscopic quantum membrane paradigm for black holes by modeling the horizon as a fuzzy sphere populated by half-filled Fermi sea partons, demonstrating how their coupling to a Berry monopole generates Lowest-Landau-Level currents that dynamically lock to external fields, thereby replacing the classical fictitious membrane with a dynamical quantum structure that yields frequency- and helicity-dependent corrections to horizon boundary conditions.

Chong-Sun Chu2026-07-14
⚛️ general relativity

Regular black holes with Minkowskian cores: causal structure and observational degeneracy

This paper presents a new family of regular black holes with Minkowskian cores constructed via gravitational decoupling and demonstrates that, despite their distinct non-singular interiors, their optical signatures such as shadows and accretion disk images are nearly indistinguishable from those of standard singular Schwarzschild and Kerr black holes.

Francisco Tello-Ortiz, Y. Gómez-Leyton, Alejandro Rueda, Kazuharu Bamba, Manuel González-Espinoza2026-07-14
⚛️ general relativity

On correlated noise in the LIGO-Virgo network: a test of the stochastic gravitational-wave background hypothesis

By analyzing nine LIGO-Virgo candidate events and finding that their inter-detector cross-correlations are statistically indistinguishable from noise in most cases, this paper argues that the cross-correlation statistic is not a robust standalone validation tool and suggests the strain data may contain a continuous correlated physical component, such as a stochastic gravitational-wave background.

S. C. Ulhoa, B. C. C. Carneiro, F. L. Carneiro, L. V. A. Cunha2026-07-14
⚛️ general relativity

How a minimal length scale modifies thermodynamics of RN AdS Black Holes?

This paper investigates how a minimal length scale arising from κ\kappa-deformed spacetime modifies the thermodynamics of Reissner-Nordström anti-de Sitter black holes, revealing that while the system retains a Van der Waals-like phase transition, non-commutativity systematically alters critical ratios, expands the cooling region in Joule-Thomson expansion, and deforms coexistence regions, offering potential observational signatures for quantum gravity.

Suman Kumar Panja, Yu Shi2026-07-14
⚛️ high-energy theory

Evading Cosmological Strong Coupling in Non-minimally Coupled Vector Gravity

This paper demonstrates that introducing an additional derivative interaction in non-minimally coupled Proca theories can eliminate the zero-speed strong-coupling problem by restoring non-degenerate scalar dynamics, thereby identifying a stable de Sitter fixed point with a non-vanishing temporal vector condensate where no-ghost and stability conditions are satisfied.

Antonio De Felice, Seishi Enomoto, Nagisa Hiroshima, Atsushi Naruko2026-07-14
⚛️ high-energy theory

Belinfante Symmetrization from Metric-Affine Conservation Laws: Hypermomentum as the Improvement Term -- The Cases of QED and QCD

This paper derives the Belinfante–Rosenfeld symmetrization procedure from metric-affine conservation laws by showing that the divergence of the hypermomentum current, defined via minimal coupling to an independent affine connection, reproduces the Belinfante improvement term in the flat-spacetime limit, a result explicitly demonstrated for Quantum Electrodynamics and Quantum Chromodynamics.

Damianos Iosifidis2026-07-14