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Unifying the Hyperbolic and Spherical \(2\)-Body Problem with Biquaternions

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Abstract

The \(2\)-body problem on the sphere and hyperbolic space are both real forms of holomorphic Hamiltonian systems defined on the complex sphere. This admits a natural description in terms of biquaternions and allows us to address questions concerning the hyperbolic system by complexifying it and treating it as the complexification of a spherical system. In this way, results for the \(2\)-body problem on the sphere are readily translated to the hyperbolic case. For instance, we implement this idea to completely classify the relative equilibria for the \(2\)-body problem on hyperbolic 3-space and discuss their stability for a strictly attractive potential.

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Funding

At the time of writing the author was funded by an EPSRC Doctoral Prize Award hosted by the University of Manchester.

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Correspondence to Philip Arathoon.

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70F05, 53D20

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Arathoon, P. Unifying the Hyperbolic and Spherical \(2\)-Body Problem with Biquaternions. Regul. Chaot. Dyn. 28, 822–834 (2023). https://doi.org/10.1134/S1560354723060011

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  • DOI: https://doi.org/10.1134/S1560354723060011

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