Finite-dimensional tau functions of the universal character hierarchy

Finite-dimensional tau functions of the universal character hierarchy
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通用字符层次结构的有限维 tau 函数

DOI:
10.1134/s0040577921030053
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发表时间:
2021
影响因子:
1
通讯作者:
Chuanzhong Li
Chuanzhong Li
中科院分区:
物理与天体物理4区
文献类型:
--
作者:
Chuanzhong Li

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摘要利用Schubert分解,我们给出了一个用Grassmannian描述的泛特征标(UC)体系的τ函数的有限维扭曲描述。此外,从UC和Kadomtsev-Petviashvili层次之间的关系的角度来看,我们研究了这个tau函数在有限维Grassmannian上的阿贝尔群的作用方面的扩展。我们使用涉及有限维矩阵的指数的Gekhtman-Kasman行列式公式,这自然会导致两个有限格拉斯曼的结构。使用Gekhtman-Kasman型公式,我们考虑一些具体的例子:合理的,孤立子和混合的解决方案。
Abstract Using the so-called Schubert decomposition, we present a finite-dimensional twisted description of the tau functions of the universal character (UC ) hierarchy using Grassmannians. Moreover, from the standpoint of the relation between the UC and Kadomtsev–Petviashvili hierarchies, we study the expansion of this tau function in terms of the action of Abelian groups on finite-dimensional Grassmannians. We use the Gekhtman–Kasman determinant formula involving exponentials of finite-dimensional matrices, which naturally leads to the structure of two finite Grassmannians. Using the Gekhtman–Kasman-type formula, we consider some concrete examples: rational, soliton, and mixed solutions.
通用字符和 q-Painleve 系统
DOI: --
发表时间: 2005
期刊: Communication in Mathematical Physics 260
影响因子: --
作者:
Teruhisa Tsuda;Tetsu Masuda;Teruhisa Tsuda;Teruhisa Tsuda;Teruhisa Tsuda;Teruhisa Tsuda
通讯作者: Teruhisa Tsuda
DOI: --
发表时间: --
期刊: Advances in mathematics (未定)(印刷中)
影响因子: --
作者:
Teruhisa Tsuda;Tetsu Masuda;Teruhisa Tsuda;Teruhisa Tsuda;Teruhisa Tsuda;Teruhisa Tsuda;Teruhisa Tsuda et al.;Teruhisa Tsuda;津田 照久;Teruhisa Tsuda;Teruhisa Tsuda;Teruhisa Tsuda
通讯作者: Teruhisa Tsuda