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arXiv 1807.03029nlin.CD
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混沌系统同宿轨道作用量的精确分解:信息约简

Exact decomposition of homoclinic orbit actions in chaotic systems: Information reduction

Jizhou Li, Steven Tomsovic

摘要:

同宿和异宿轨道提供了混沌动力系统的完整动力学框架,并且是量子波包、相干态和输运量的半经典和的基础。在这里,同宿轨道的组织根据其相空间的游览的复杂性,和精确的关系推导出复杂的轨道表示为线性组合的那些简单的游览加上相空间的细胞领域所界定的稳定和不稳定的流形的相对经典行动。同宿轨道的总数随着漂移复杂度的增加而呈指数增长,相应的胞元面积也呈指数减小。随着所需精度的规范,指数增殖的同宿轨道作用集是由一个慢于指数增加的细胞面积,这可能是一种手段,大大简化了半经典公式的发展。

英文摘要:

Homoclinic and heteroclinic orbits provide a skeleton of the full dynamics of a chaotic dynamical system and are the foundation of semiclassical sums for quantum wave packet, coherent state, and transport quantities. Here, the homoclinic orbits are organized according to the complexity of their phase-space excursions, and exact relations are derived expressing the relative classical actions of complicated orbits as linear combinations of those with simpler excursions plus phase-space cell areas bounded by stable and unstable manifolds. The total number of homoclinic orbits increases exponentially with excursion complexity, and the corresponding cell areas decrease exponentially in size as well. With the specification of a desired precision, the exponentially proliferating set of homoclinic orbit actions is expressible by a slower-than-exponentially increasing set of cell areas, which may present a means for developing greatly simplified semiclassical formulas.

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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