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28 March 2024
 
  » arxiv » nlin.CD/0502019

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Absolute and relative choreographies in the problem of point vortices moving on a plane
A. V. Borisov ; I. S. Mamaev ; A. A. Kilin ;
Date 10 Feb 2005
Journal Regular and Chaotic Dynamics, 2004 Volume 9 Number 2
Subject Chaotic Dynamics; Exactly Solvable and Integrable Systems | nlin.CD nlin.SI
AbstractWe obtained new periodic solutions in the problems of three and four point vortices moving on a plane. In the case of three vortices, the system is reduced to a Hamiltonian system with one degree of freedom, and it is integrable. In the case of four vortices, the order is reduced to two degrees of freedom, and the system is not integrable. We present relative and absolute choreographies of three and four vortices of the same intensity which are periodic motions of vortices in some rotating and fixed frame of reference, where all the vortices move along the same closed curve. Similar choreographies have been recently obtained by C. Moore, A. Chenciner, and C. Simo for the n-body problem in celestial mechanics [6, 7, 17]. Nevertheless, the choreographies that appear in vortex dynamics have a number of distinct features.
Source arXiv, nlin.CD/0502019
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