Partially rigid motions in the planar three-body problem

Fuente: arXiv
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Autor principal: Moeckel, Richard
Formato: Preprint
Publicado: 2025
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author Moeckel, Richard
author_facet Moeckel, Richard
contents A solution of the n-body problem in R^d is a relative equilibrium if all of the mutual distance between the bodies are constant. In other words, the bodies undergo a rigid motion. Here we investigate the possibility of partially rigid motions, where some but not all of the distances are constant. For the planar three-body problem with equal masses, we show that partially rigid motions are impossible -- if even one of the three mutual distances is constant, the motion must be a relative equilibrium.
format Preprint
id arxiv_https___arxiv_org_abs_2506_13570
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Partially rigid motions in the planar three-body problem
Moeckel, Richard
Dynamical Systems
37N05, 70F10, 70F15, 70F16, 70G60
A solution of the n-body problem in R^d is a relative equilibrium if all of the mutual distance between the bodies are constant. In other words, the bodies undergo a rigid motion. Here we investigate the possibility of partially rigid motions, where some but not all of the distances are constant. For the planar three-body problem with equal masses, we show that partially rigid motions are impossible -- if even one of the three mutual distances is constant, the motion must be a relative equilibrium.
title Partially rigid motions in the planar three-body problem
topic Dynamical Systems
37N05, 70F10, 70F15, 70F16, 70G60
url https://arxiv.org/abs/2506.13570