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arXiv math/9906161math.APmath-phmath.MP
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多体散射中的奇性传播

Propagation of singularities in many-body scattering

Andras Vasy

摘要:

在本文中,我们描述了多体哈密顿量的调和分布广义本征函数的奇性传播奇性传播,假定没有子系统具有束缚态,两体相互作用是-1阶的实值多齐次符号(例如,去除原点处的奇性的库仑型)。这里的术语“奇点”提供了一个微局部的描述,在无穷远没有衰减。我们使用这个结果来证明,波前关系的自由到自由的S-矩阵(这是在我们的假设下,是所有的S-矩阵)是由破碎的测地线关系,打破了在'奇异方向'(由碰撞平面)上的球,在时间pi。我们还提出了对渐进欧几里得空间的自然几何推广。

英文摘要:

In this paper we describe the propagation of singularities of tempered distributional generalized eigenfunctions of many-body Hamiltonians under the assumption that no subsystem has a bound state and that the two-body interactions are real-valued polyhomogeneous symbols of order -1 (e.g. Coulomb-type with the singularity at the origin removed). Here the term 'singularity' provides a microlocal description of the lack of decay at infinity. We use this result to prove that the wave front relation of the free-to-free S-matrix (which, under our assumptions, is all of the S-matrix) is given by the broken geodesic relation, broken at the 'singular directions' (given by the collision planes) on the sphere, at time pi. We also present a natural geometric generalization to asymptotically Euclidean spaces.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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