arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 1302.6129math-phhep-thmath.MPmath.QAnlin.SI
收藏

改进的熔融晶体模型和Ablowitz-Ladik族

Modified melting crystal model and Ablowitz-Ladik hierarchy

Kanehisa Takasaki

摘要:

本文讨论了拓扑弦论的一个改进的熔化晶体模型在分解锥上的可积结构问题。配分函数可以表示为二维复自由费米子场Fock空间上算符的真空期望值。量子环面代数费米子双线性背后的这个表达式被证明有一个扩展的“移位对称”。它们被用来证明的配分函数(变形的外部潜力)本质上是一个tau函数的二维Toda的层次。二维Toda族的这种特殊解也可以由$\ZZ\times\ZZ$矩阵的因式分解问题来表征。相关的Lax算子原来是一阶差分算子的导数。这意味着所讨论的二维Toda层次的解实际上是Ablowitz-Ladik(等价于相对论Toda)层次的解。作为一个副产品,移位对称性示出相关的矩阵值量子双对数函数。

英文摘要:

This paper addresses the issue of integrable structure in a modified melting crystal model of topological string theory on the resolved conifold. The partition function can be expressed as the vacuum expectation value of an operator on the Fock space of 2D complex free fermion fields. The quantum torus algebra of fermion bilinears behind this expression is shown to have an extended set of "shift symmetries". They are used to prove that the partition function (deformed by external potentials) is essentially a tau function of the 2D Toda hierarchy. This special solution of the 2D Toda hierarchy can be characterized by a factorization problem of $\ZZ\times\ZZ$ matrices as well. The associated Lax operators turn out to be quotients of first order difference operators. This implies that the solution of the 2D Toda hierarchy in question is actually a solution of the Ablowitz-Ladik (equivalently, relativistic Toda) hierarchy. As a byproduct, the shift symmetries are shown to be related to matrix-valued quantum dilogarithmic functions.

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。

↑