Citation

BibTex format

@article{de:2024:10.1103/PhysRevD.109.104035,
author = {de, Rham C and Giblin, JT and Tolley, AJ},
doi = {10.1103/PhysRevD.109.104035},
journal = {Physical Review D},
title = {Scalar radiation with a quartic Galileon},
url = {http://dx.doi.org/10.1103/PhysRevD.109.104035},
volume = {109},
year = {2024}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - The class of Galileon scalar fields theories encapsulate the Vainshtein screening mechanism, which is characteristic of a large range of infrared modified theories of gravity. Such theories can lead to testable departures from general relativity through fifth forces and new scalar modes of gravitational radiation. However, the inherent nonlinearity of the Vainshtein mechanism has limited analytic attempts to describe Galileon theories with both cubic and quartic interactions. To improve on this, we perform direct numerical simulations of the quartic Galileon model for a rotating binary source and infer the power spectrum of given multipoles. To tame numerical instabilities we utilize a low-pass filter, extending previous work on the cubic Galileon. Our findings show that the multipole expansion is well defined and under control. Moreover, our results confirm that despite being a nonlinear scalar, the dominant Galileon radiation is quadrupole, and we find a new scaling behavior deep inside the Vainshtein region.
AU  - de,Rham C
AU  - Giblin,JT
AU  - Tolley,AJ
DO  - 10.1103/PhysRevD.109.104035
PY  - 2024///
SN  - 2470-0010
TI  - Scalar radiation with a quartic Galileon
T2  - Physical Review D
UR  - http://dx.doi.org/10.1103/PhysRevD.109.104035
UR  - https://journals.aps.org/prd/abstract/10.1103/PhysRevD.109.104035
VL  - 109
ER  -
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