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arXiv 0812.3761hep-thgr-qc
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Yang-Mills矩阵模型的协变场方程、规范场和守恒律

Covariant Field Equations, Gauge Fields and Conservation Laws from Yang-Mills Matrix Models

Harold Steinacker

摘要:

确定了杨-米尔斯矩阵模型中一般NC膜上非交换规范场和标量场的有效几何和引力耦合。协变场方程是从运动的基本矩阵方程导出的,称为杨-米尔斯代数。值得注意的是,泊松结构和非交换规范场的运动方程都遵循矩阵诺特定理,因此不受量子修正的影响。这为[1]中得到的SU(n)规范场的有效作用量(包括可能的拓扑项)提供了一个透明的推导和推广。特别地,IKKT矩阵模型能够用一般有效度量描述4维NC时空。简要讨论了平坦Moyal-Weyl空间的度量变形。

英文摘要:

The effective geometry and the gravitational coupling of nonabelian gauge and scalar fields on generic NC branes in Yang-Mills matrix models is determined. Covariant field equations are derived from the basic matrix equations of motions, known as Yang-Mills algebra. Remarkably, the equations of motion for the Poisson structure and for the nonabelian gauge fields follow from a matrix Noether theorem, and are therefore protected from quantum corrections. This provides a transparent derivation and generalization of the effective action governing the SU(n) gauge fields obtained in [1], including the would-be topological term. In particular, the IKKT matrix model is capable of describing 4-dimensional NC space-times with a general effective metric. Metric deformations of flat Moyal-Weyl space are briefly discussed.

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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