Work

Repulsive effect of covariant effective quantum gravity

Year: 2025

Type: article

Abstract: In general relativity, gravity around a black hole is universally regarded as an attractive force. However, quantum effects may significantly alter this classical picture and thus affect the dynamics of test particles. In this work, we investigate geodesic motion in a recently proposed covariant effective quantum black hole model, the ZLMY type I model in [Black holes and covariance in effective quantum gravity, Phys. Rev. D 111, L081504 (2025).]. Our analytical study reveals that, at the Planck scale, gravity can exhibit a repulsive character, most notably in trajectories involving turning points. These findings suggest that quantum corrections could fundamentally modify our conventional understanding of gravitational interactions in certain regimes.

Source: Physical review. D/Physical review. D.

DOI: 10.1103/77sk-dmd9

Authors: Yan Liu, Jie Jiang, Bing Sun

Institutions: Yantai University, Beijing Normal University, Beijing University of Agriculture

Language: English

Topic: Noncommutative and Quantum Gravity Theories

Subfield: Statistical and Nonlinear Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green