J 2025

Geodesics in quantum gravity

KOCH, Benjamin; Ali RIAHINIA and Ángel Erasmo RINCÓN RIVERO

Basic information

Original name

Geodesics in quantum gravity

Authors

KOCH, Benjamin; Ali RIAHINIA and Ángel Erasmo RINCÓN RIVERO

Edition

Physical Review D, 2025, 2470-0010

Other information

Language

English

Type of outcome

Article in a journal

Field of Study

10308 Astronomy

Country of publisher

United States of America

Confidentiality degree

is not subject to a state or trade secret

References:

URL

Impact factor

Impact factor: 5.300 in 2024

Organization unit

Institute of physics in Opava

DOI

https://doi.org/10.1103/w1sd-v69d

UT WoS

001616050700006

EID Scopus

2-s2.0-105021116862

Keywords in English

effective field theory;generla relativity;newtonian dynamics;energy;invariance

Tags

RIV26, UF

Tags

International impact, Reviewed
Changed: 22/1/2026 12:35, Mgr. Pavlína Jalůvková

Abstract

In the original language

We investigate the motion of test particles in quantum-gravitational backgrounds by introducing the concept of q-desics, quantum-corrected analogs of classical geodesics. Unlike standard approaches that rely solely on the expectation value of the spacetime metric, our formulation is based on the expectation value of quantum operators, such as the affine connection operator. This allows us to capture richer geometric information. We derive the q-desic equation using both Lagrangian and Hamiltonian methods and apply it to spherically symmetric static backgrounds obtained from canonical quantum gravity. Exemplary results include lightlike radial motion and circular motion with quantum gravitational corrections far above the Planck scale. This framework provides a refined description of motion in quantum spacetimes and opens new directions for probing the interface between quantum gravity and classical general relativity.
Displayed: 30/1/2026 08:20