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arXiv 0902.4833hep-th
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关于二维量子引力与准经典可积族

On two-dimensional quantum gravity and quasiclassical integrable hierarchies

A. Marshakov

摘要:

本文给出了用矩阵模型或可积方法导出的二维量子引力的主要结果,并与世界单或刘维尔方法作了比较。在球面极限下,基于准经典族的留数公式,用两个多项式的简单操作,完全地给出了极小弦论的可积边。特定的模型进行明确的计算,并讨论了它们之间的非平凡关系的某些微妙的问题。它们涉及不同理论之间的联系,作为基本相同的弦解在不同背景下对无色散KP族的扩展而获得,其特征在于不同时间的非零背景值,当移动到理论的模空间中的不同点时,是物理观测量的量子数变化的最简单已知例子。

英文摘要:

The main results for the two-dimensional quantum gravity, conjectured from the matrix model or integrable approach, are presented in the form to be compared with the world-sheet or Liouville approach. In spherical limit the integrable side for minimal string theories is completely formulated using simple manipulations with two polynomials, based on residue formulas from quasiclassical hierarchies. Explicit computations for particular models are performed and certain delicate issues of nontrivial relations among them are discussed. They concern the connections between different theories, obtained as expansions of basically the same stringy solution to dispersionless KP hierarchy in different backgrounds, characterized by nonvanishing background values of different times, being the simplest known example of change of the quantum numbers of physical observables, when moving to a different point in the moduli space of the theory.

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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