Simulating a numerical UV completion of quartic Galileons
File(s)
Published version
Author(s)
Gerhardinger, Mary
Giblin Jr, John T
Tolley, Andrew J
Trodden, Mark
Type
Journal Article
Abstract
The Galileon theory is a prototypical effective field theory that incorporates the Vainshtein screening mechanism—a feature that arises in some extensions of general relativity, such as massive gravity. The Vainshtein effect requires that the theory contain higher order derivative interactions, which results in Galileons, and theories like them, failing to be technically well posed. While this is not a fundamental issue when the theory is correctly treated as an effective field theory, it nevertheless poses significant practical problems when numerically simulating this model. These problems can be tamed using a number of different approaches: introducing an active low-pass filter and/or constructing a UV completion at the level of the equations of motion, which controls the high momentum modes. These methods have been tested on cubic Galileon interactions, and have been shown to reproduce the correct low-energy behavior. Here we show how the numerical UV-completion method can be applied to quartic Galileon interactions, and present the first simulations of the quartic Galileon model using this technique. We demonstrate that our approach can probe physics in the regime of the effective field theory in which the quartic term dominates, while successfully reproducing the known results for cubic interactions.
Date Issued
2024-06-15
Date Acceptance
2024-04-23
Citation
Physical Review D: Particles, Fields, Gravitation and Cosmology, 2024, 109 (12)
ISSN
1550-7998
Publisher
American Physical Society
Journal / Book Title
Physical Review D: Particles, Fields, Gravitation and Cosmology
Volume
109
Issue
12
Copyright Statement
Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3 .
License URL
Identifier
10.1103/PhysRevD.109.124021
Subjects
Astronomy & Astrophysics
NONSTATIONARY
Physical Sciences
Physics
Physics, Particles & Fields
Science & Technology
THERMODYNAMICS
Publication Status
Published
Article Number
124021
Date Publish Online
2024-06-11