sa ›› 2018, Vol. 23 ›› Issue (1): 146-157.doi: 10.1007/s12204-018-1920-2
HOHBERGER Horst1*, KLEIN Markus2*
HOHBERGER Horst1*, KLEIN Markus2*
摘要: Classical scattering trajectories are known to form a Lagrangian manifold in euclidean phase space, which allows the classification of local focal points for sufficiently small dimensions. For the case of a short-range potential, we show that the natural description of focal points at infinity is a Lagrangian manifold in the cotangent bundle of the sphere and establish the relationship between focal points at infinity and the projection singularities of that manifold.
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