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arXiv 1207.2636hep-th
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柏拉图双曲单极

Platonic hyperbolic monopoles

Nicholas Manton, Paul Sutcliffe

摘要:

我们构建了一些明确的双曲单极子的例子,与各种费用,往往与一些柏拉图对称。这些场是从四维欧几里得空间中的瞬子数据中获得的,它们在圆作用下是不变的,并且在大多数情况下,瞬子电荷等于瞬子电荷。一个关键因素是识别一组新的ADHM瞬子数据的约束,足以确保圆不变性。与欧几里德磁单极子不同,在我们构造的例子中,希格斯场平方的大小公式是坐标的有理函数。利用这些公式,我们计算和说明的能量密度的单极子。我们还证明了,对于特定的单极子,希格斯场的零点的数量大于电荷,证实了数值结果建立较早的欧几里德单极子。我们还提出了一些单参数家庭的单极类似于已知的散射事件的欧氏单极内的测地线近似。

英文摘要:

We construct a number of explicit examples of hyperbolic monopoles, with various charges and often with some platonic symmetry. The fields are obtained from instanton data in four-dimensional Euclidean space that are invariant under a circle action, and in most cases the monopole charge is equal to the instanton charge. A key ingredient is the identification of a new set of constraints on ADHM instanton data that are sufficient to ensure the circle invariance. Unlike for Euclidean monopoles, the formulae for the squared Higgs field magnitude in the examples we construct are rational functions of the coordinates. Using these formulae, we compute and illustrate the energy density of the monopoles. We also prove, for particular monopoles, that the number of zeros of the Higgs field is greater than the monopole charge, confirming numerical results established earlier for Euclidean monopoles. We also present some one-parameter families of monopoles analogous to known scattering events for Euclidean monopoles within the geodesic approximation.

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