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arXiv 1109.5504math.DS
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整极小抛物轨线:平面各向异性开普勒问题

Entire minimal parabolic trajectories: the planar anisotropic Kepler problem

Vivina Barutello, Susanna Terracini, Gianmaria Verzini

摘要:

我们继续在我们以前的文章[5]中介绍的抛物轨道的变分方法,它将抛物轨道视为最小相变。我们深化和完成了平面情况下的齐次奇异势的分析。我们的特点是所有抛物轨道连接两个最小的中心配置作为自由时间莫尔斯极小(在一个给定的同伦类的路径)。这些可能发生在均匀性指数的至多一个值上。此外,我们链接这个阈值的存在的抛物线轨迹的情况下,所有的最小化的固定端问题的碰撞。同样,具有非平凡同伦类型的作用极小化周期轨线的存在性也可以与相同的阈值有关。

英文摘要:

We continue the variational approach to parabolic trajectories introduced in our previous paper [5], which sees parabolic orbits as minimal phase transitions. We deepen and complete the analysis in the planar case for homogeneous singular potentials. We characterize all parabolic orbits connecting two minimal central configurations as free-time Morse minimizers (in a given homotopy class of paths). These may occur for at most one value of the homogeneity exponent. In addition, we link this threshold of existence of parabolic trajectories with the absence of collisions for all the minimizers of fixed-ends problems. Also the existence of action minimizing periodic trajectories with nontrivial homotopy type can be related with the same threshold.

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