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arXiv · 1710.00522

The spatial $N$-centre problem: scattering at positive energies

A. Boscaggin·A. Bottois·W. Dambrosio
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Abstract

For the spatial generalized $N$-centre problem $$ \ddot{x} = -\sum_{i=1}^{N} \frac{m_i (x - c_i)}{\vert x - c_i \vert^{\alpha+2}},\qquad x \in \mathbb{R}^3 \setminus \{c_1,\dots,c_N \}, $$ where $m_i > 0$ and $\alpha \in [1,2)$, we prove the existence of positive energy entire solutions with prescribed scattering angle. The proof relies on variational arguments, within an approximation procedure via (free-time) boundary value problems. A self-contained appendix describing a general strategy to rule out the occurrence of collisions is also included.

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A. Boscaggin, A. Bottois, W. Dambrosio. 2017-10-02. The spatial $N$-centre problem: scattering at positive energies. https://doi.org/10.1007/s00526-018-1390-2

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