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arXiv 0810.3220hep-thmath.DG
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紧致Riemann曲面上的非交换涡

Non-abelian vortices on compact Riemann surfaces

J. M. Baptista

摘要:

我们考虑一个U(n)规范场耦合到一个Higgs场的涡旋方程,其值在n × n方阵上。当这些方程定义在紧致黎曼曲面上时,其解的模空间与该曲面上的τ-稳定全纯n-对的模空间密切相关。利用这一事实和希格斯矩阵的局部因式分解结果,我们表明,涡解的特征完全在于(1)在表面上的位置的零点的Higgs矩阵的行列式和(2)通过选择在每个这些零点的涡的内部结构。我们明确地描述了涡的内部空间,并表明它们是紧的和连通的空间。

英文摘要:

We consider the vortex equations for a U(n) gauge field coupled to a Higgs field with values on the n times n square matrices. It is known that when these equations are defined on a compact Riemann surface, their moduli space of solutions is closely related to a moduli space of tau-stable holomorphic n-pairs on that surface. Using this fact and a local factorization result for the Higgs matrix, we show that the vortex solutions are entirely characterized by (1) the location in the surface of the zeros of the determinant of the Higgs matrix and (2) by the choice of a vortex internal structure at each of these zeros. We describe explicitly the vortex internal spaces and show that they are compact and connected spaces.

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