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arXiv 2409.03705math-phhep-thmath.MPmath.OAmath.PR
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箭图上非对易几何的环路方程

The loop equations for noncommutative geometries on quivers

Carlos Perez-Sanchez

AI总结:

本文利用箭图表示定义固定图上非对易几何的 Dirac 算子路径积分,证明由谱作用量加权的环路方程,将 Makeenko–Migdal 约束推广到任意图,并通过 Gross–Witten–Wadia 模型验证 bootstrap 解。

摘要:

正如标题所示,我们利用箭图表示,定义了一个对 Dirac 算子的路径积分,用于对固定图上的非对易几何取平均。我们证明了相应可观测量的期望值所满足的代数关系;这些期望值通过对酉群的积分计算,其权重由谱作用量定义。这些方程将 Makeenko–Migdal 方程——即格点规范理论的约束——从格点推广到任意图。作为展望,我们的环路方程与正性条件(作用于一个由 Wilson 环路复合参数化的矩阵)相结合。在一个简单箭图上,这一被称为“bootstrap”的组合得到了完整推导。相应的配分函数归结为一个称为 Gross–Witten–Wadia 模型的积分;其解证实了由我们的环路方程自举得到的解。

英文摘要:

We define a path integral over Dirac operators that averages over noncommutative geometries on a fixed graph, as the title reveals, using quiver representations. We prove algebraic relations that are satisfied by the expectation value of the respective observables, computed in terms of integrals over unitary groups, with weights defined by the spectral action. These equations generalise the Makeenko-Migdal equations -- the constraints of lattice gauge theory -- from lattices to arbitrary graphs. As a perspective, our loop equations are combined with positivity conditions (on a matrix parametrised by composition of Wilson loops). On a simple quiver this combination known as `bootstrap' is fully worked out. The respective partition function boils down to an integral known as Gross-Witten-Wadia model; their solution confirms the solution bootstrapped by our loop equations.

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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