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arXiv 1108.0328math.DSmath-phmath.MPmath.SG
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可积系统的辛分歧理论

Symplectic bifurcation theory for integrable systems

Alvaro Pelayo, Tudor S. Ratiu, San Vu Ngoc

摘要:

本文发展了四维可积系统的辛分歧理论。证明了若可积系统无双曲奇点且其分岔图无垂直切线,则诱导奇异拉格朗日纤维化的纤维是连通的。这种奇异拉格朗日纤维化的图像,直到光滑变形,一个平面区域的两个连续函数的图形界定。分叉图由该图像中的边界点加上包含在图像内部的可计数的秩零奇点的集合组成。由于近年来数学界和数学物理界已经认识到,可积系统的分歧图是研究辛不变量的最佳框架,本文为研究量子化问题和量子可积系统的谱理论提供了一个背景。

英文摘要:

This paper develops a symplectic bifurcation theory for integrable systems in dimension four. We prove that if an integrable system has no hyperbolic singularities and its bifurcation diagram has no vertical tangencies, then the fibers of the induced singular Lagrangian fibration are connected. The image of this singular Lagrangian fibration is, up to smooth deformations, a planar region bounded by the graphs of two continuous functions. The bifurcation diagram consists of the boundary points in this image plus a countable collection of rank zero singularities, which are contained in the interior of the image. Because it recently has become clear to the mathematics and mathematical physics communities that the bifurcation diagram of an integrable system provides the best framework to study symplectic invariants, this paper provides a setting for studying quantization questions, and spectral theory of quantum integrable systems.

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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