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Schubart-like orbits in the Newtonian collinear four-body problem: A variational proof

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  • The Schubart-like orbits in the collinear four-body problem are similar to those discovered numerically by Schubart[12] in the collinear three-body problem. Schubart-like orbits are periodic solutions with exactly two binary collisions and one simultaneous binary collision per period. The proof of the existence of these orbits given in this paper is based on the direct method of Calculus of Variations. We exploit the variational structure of the problem and show that the minimizers of the Lagrangian action functional in a suitably chosen space have the desired properties.
    Mathematics Subject Classification: Primary: 70F16, 70F10; Secondary: 35A15.

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