Universality of free fall in planck-scale deformed Newtonian gravity

verfasst von: Giuseppe Fabiano, Domenico Frattulillo, Christian Pfeifer, Fabian Wagner
Abstract: The universality of free fall is one of the most cherished principles in classical gravity. Its fate in the quantum world is one of the key questions in fundamental physics. We investigate the universality of free fall in the context of Planck scale modifications of Newtonian gravity. Starting from a doubly-special-relativity setting we take the Newtonian limit to obtain deformed Galilean relativity. We study the interaction between two test particles, subject to deformed Galilean relativity, and a classical, undeformed gravitational source, the Earth. Such an interaction is investigated here for the first time. Considering the two test particles falling freely in the source's gravitational field, we examine whether the universality of free fall is affected by deformed relativistic symmetries. We show that, in general, the universality of free fall is violated. Remarkably, we find that there exist distinguished models for which the universality of free fall is realized and which predict a specific modification of the Newtonian potential.
Externe Organisation(en): Lawrence Berkeley National Laboratory
University of California at Berkeley
Enrico Fermi Center
Università degli Studi di Napoli Federico II
Universität Bremen
Ruprecht-Karls-Universität Heidelberg
Typ: Artikel
Journal: Physical Review D
Band: 112
Seiten: 124008-1-124008-12
ISSN: 2470-0010
Publikationsdatum: 02.12.2025
Publikationsstatus: Veröffentlicht
Peer-reviewed: Ja
ASJC Scopus Sachgebiete: Kern- und Hochenergiephysik
Elektronische Version(en): https://doi.org/10.1103/whyz-n93x (Zugang: Unbekannt)

BibTeX

@article{26931775ebab4a64866bfa7df132c694,
title = "Universality of free fall in planck-scale deformed Newtonian gravity",
abstract = "The universality of free fall is one of the most cherished principles in classical gravity. Its fate in the quantum world is one of the key questions in fundamental physics. We investigate the universality of free fall in the context of Planck scale modifications of Newtonian gravity. Starting from a doubly-special-relativity setting we take the Newtonian limit to obtain deformed Galilean relativity. We study the interaction between two test particles, subject to deformed Galilean relativity, and a classical, undeformed gravitational source, the Earth. Such an interaction is investigated here for the first time. Considering the two test particles falling freely in the source's gravitational field, we examine whether the universality of free fall is affected by deformed relativistic symmetries. We show that, in general, the universality of free fall is violated. Remarkably, we find that there exist distinguished models for which the universality of free fall is realized and which predict a specific modification of the Newtonian potential.",
author = "Giuseppe Fabiano and Domenico Frattulillo and Christian Pfeifer and Fabian Wagner",
note = "Publisher Copyright: {\textcopyright} 2025 All rights reserved.",
year = "2025",
month = dec,
day = "2",
doi = "10.1103/whyz-n93x",
language = "English",
volume = "112",
pages = "124008--1--124008--12",
journal = "Physical Review D",
issn = "2470-0010",
publisher = "American Physical Society",
number = "12",
}