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arXiv 1012.3263hep-thgr-qc
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(2+1)引力中三体问题的哈密顿解

Hamiltonian solutions of the 3-body problem in (2+1)-gravity

M. Ciafaloni, S. Munier

摘要:

本文全面研究了在平坦的(2+1)维时空中,在非相对论性的小速度极限下的引力三体问题。我们提供了一个明确的形式ADM哈密顿量在一个定期的坐标系,我们建立了正则量子化的所有成分。我们强调了U(2)对称性的作用,在这种对称性下,哈密顿量是不变的,并且应该推广到N个物体的U(N-1)对称性。这种对称性似乎源于粒子相互环绕的操作中的辫子群结构,并保证了哈密顿量的单值性。它的作用的单值能量本征函数的建设进行了讨论。

英文摘要:

We present a full study of the 3-body problem in gravity in flat (2+1)-dimensional space-time, and in the nonrelativistic limit of small velocities. We provide an explicit form of the ADM Hamiltonian in a regular coordinate system and we set up all the ingredients for canonical quantization. We emphasize the role of a U(2) symmetry under which the Hamiltonian is invariant and which should generalize to a U(N-1) symmetry for N bodies. This symmetry seems to stem from a braid group structure in the operations of looping of particles around each other, and guarantees the single-valuedness of the Hamiltonian. Its role for the construction of single-valued energy eigenfunctions is also discussed.

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