arXivDaily arXiv每日学术速递 周一至周五更新
arXiv math-ph/0203056math-phmath.CTmath.MP
收藏

具有联络和曲率的非阿贝尔格贝的组合数学

Combinatorics of Non-Abelian Gerbes with Connection and Curvature

Romain Attal

摘要:

当局部对称群$G$为非阿贝尔群时,给出了单纯复形上$G$ -格贝的函子定义.这些组合格贝自然具有连接结构和弯曲。这允许我们定义一个在边路空间上具有函子连接的纤维范畴。通过计算后者在无穷小4-单形面上的曲率,我们恢复了该曲面的曲率所满足的上循环恒等式。与$BF$ -理论的联系表明,gerbes提供了一个框架,适用于强耦合规范理论的几何表述。

英文摘要:

We give a functorial definition of $G$-gerbes over a simplicial complex when the local symmetry group $G$ is non-Abelian. These combinatorial gerbes are naturally endowed with a connective structure and a curving. This allows us to define a fibered category equipped with a functorial connection over the space of edge-paths. By computing the curvature of the latter on the faces of an infinitesimal 4-simplex, we recover the cocycle identities satisfied by the curvature of this gerbe. The link with $BF$-theories suggests that gerbes provide a framework adapted to the geometric formulation of strongly coupled gauge theories.

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。

↑