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arXiv 0811.4187hep-th
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任意维的单极

Monopoles in arbitrary dimension

Pablo Díaz, Joan-Andreu Lázaro-Camí

摘要:

本文用主丛的语言对纯杨-米尔斯理论的双组态进行了完备的研究,并讨论了它们的荷。球面S^n上的n维连通是对称空间K/H上的主丛上的一种特殊类型的主联络,其中K=SO(n+1),H=SO(n)。证明了对称空间上的主丛存在唯一的K-不变主联络,称为标准联络,它也满足Yang-Mills方程。的几何框架,使我们能够描述其相关的场强在纯粹的代数术语和计算有关(杨型)单极子的电荷,避免使用坐标。此外,本文还对已知结果进行了两次修正。首先,证明了杨维应被认为是Spin(5)而不是SO(5)不变量的联系,正如杨维在他的原始文章J. Math. Phys. 19(1),pp. 320-328(1978)。第二,不像课堂上建议的那样。量子重力23,pp. 4873-4885(2006)中,我们给出了用于计算Gibbons和Townsend研究的单极子电荷的正确特征类。

英文摘要:

A self-contained study of monopole configurations of pure Yang-Mills theories and a discussion of their charges is carried out in the language of principal bundles. A n-dimensional monopole over the sphere S^n is a particular type of principal connection on a principal bundle over a symmetric space K/H which is K-invariant, where K=SO(n+1) and H=SO(n). It is shown that principal bundles over symmetric spaces admit a unique K-invariant principal connection called canonical, which also satisfy Yang-Mills equations. The geometrical framework enables us to describe their associated field strengths in purely algebraic terms and compute the charge of relevant (Yang-type) monopoles avoiding the use of coordinates. Besides, two corrections on known results are performed in this paper. First, it is proven that the Yang monopole should be considered a connection invariant by Spin(5) instead of by SO(5), as Yang did in his original article J. Math. Phys. 19(1), pp. 320-328 (1978). Second, unlike the way suggested in Class. Quantum Grav. 23, pp. 4873-4885 (2006), we give the correct characteristic class to be used to calculate the charge of the monopoles studied by Gibbons and Townsend.

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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