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arXiv 1508.03232hep-thmath.DG
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关于粒子群的电荷密度和渐近尾

On the charge density and asymptotic tail of a monopole

Derek Harland, Daniel Nogradi

摘要:

基于狄拉克算符的零模,我们提出了一个新的非交换磁荷密度的定义。与标准定义的电荷密度不同,这个密度在电子束的核心是平滑的。我们表明,这种电荷密度感应的磁场的1/r的幂的扩展同意与传统的渐近磁场的所有订单。我们还表明,渐近场可以很容易地计算从谱曲线。明确的例子给出了已知的无约束的解决方案。

英文摘要:

We propose a new definition for the abelian magnetic charge density of a non-abelian monopole, based on zero-modes of an associated Dirac operator. Unlike the standard definition of the charge density, this density is smooth in the core of the monopole. We show that this charge density induces a magnetic field whose expansion in powers of 1/r agrees with that of the conventional asymptotic magnetic field to all orders. We also show that the asymptotic field can be easily calculated from the spectral curve. Explicit examples are given for known monopole solutions.

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