Semi-agnostic inspiral modeling: the massless scalar case at leading post-Newtonian order
Abstract
We introduce a semi-agnostic modeling framework for black hole binary inspirals beyond general relativity that fixes the field content without selecting a particular theory. We expand in the post-Newtonian order and in powers of l/L, where l is the characteristic length-scale that controls deviations from General Relativity and L is the characteristic length-scale of the system. We focus on the case of a massless scalar field coupled with the metric, at leading post-Newtonian order. Taking into account the scaling with l/L of both the interaction terms and the quantities that characterise the sources, we find that the inspiral can be described in terms of a small number of universal parameters. Such a parametrisation is suitable for obtaining combined bounds from multiple sources and performing searches for specific fields.
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BibTeX
@misc{rossi2026semiagnostic,
title = {{Semi-agnostic inspiral modeling: the massless scalar case at leading post-Newtonian order}},
author = {Dario Rossi and Leonardo Gualtieri and Thomas P. Sotiriou},
howpublished = {arXiv},
year = {2026},
month = oct,
doi = {10.48550/arxiv.2610.36037},
eprint = {2610.36037},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2610.36037},
note = {CC BY 4.0},
}
RIS
TY - UNPB
TI - Semi-agnostic inspiral modeling: the massless scalar case at leading post-Newtonian order
AU - Dario Rossi
AU - Leonardo Gualtieri
AU - Thomas P. Sotiriou
PY - 2026
DA - 2026/10/26
PB - arXiv
DO - 10.48550/arxiv.2610.36037
UR - https://arxiv.org/abs/2610.36037
AB - We introduce a semi-agnostic modeling framework for black hole binary inspirals beyond general relativity that fixes the field content without selecting a particular theory. We expand in the post-Newtonian order and in powers of l/L, where l is the characteristic length-scale that controls deviations from General Relativity and L is the characteristic length-scale of the system. We focus on the case of a massless scalar field coupled with the metric, at leading post-Newtonian order. Taking into account the scaling with l/L of both the interaction terms and the quantities that characterise the sources, we find that the inspiral can be described in terms of a small number of universal parameters. Such a parametrisation is suitable for obtaining combined bounds from multiple sources and performing searches for specific fields.
ER -