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arXiv 1208.6035math-phhep-thmath.MP
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任意分歧的广义拓扑递归

A generalized topological recursion for arbitrary ramification

Vincent Bouchard, Joel Hutchinson, Prachi Loliencar, Michael Meiers, Matthew Rupert

摘要:

Eynard-Orantin拓扑递归依赖于黎曼曲面S和S上的两个亚纯函数x和y的几何。为了公式化递归,必须假设x只有简单的分歧点。本文提出了一个广义拓扑递归,它对x和任意分支都是有效的。我们证明我们的建议,通过研究退化的黎曼曲面。我们在各种例子中检查我们的广义递归与变换(x,y)->(y,x)下自由能的不变性是相容的,其中x或y(或两者)具有高阶分支,并且它满足原始递归的一些最重要的性质。在此过程中,我们证明了(x,y)->(y,x)下的不变性实际上比预期的更微妙;我们证明了在原始的Eynard-Orantin递归的情况下已经存在许多反例,值得进一步研究。

英文摘要:

The Eynard-Orantin topological recursion relies on the geometry of a Riemann surface S and two meromorphic functions x and y on S. To formulate the recursion, one must assume that x has only simple ramification points. In this paper we propose a generalized topological recursion that is valid for x with arbitrary ramification. We justify our proposal by studying degenerations of Riemann surfaces. We check in various examples that our generalized recursion is compatible with invariance of the free energies under the transformation (x,y) -> (y,x), where either x or y (or both) have higher order ramification, and that it satisfies some of the most important properties of the original recursion. Along the way, we show that invariance under (x,y) -> (y,x) is in fact more subtle than expected; we show that there exists a number of counter examples, already in the case of the original Eynard-Orantin recursion, that deserve further study.

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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