Magnetic monopole as a spacetime defect
Magnetic monopole as a spacetime defect
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作为时空缺陷的磁单极子
DOI：
10.1103/physrevd.104.044038
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发表时间：
2020
影响因子：
5
通讯作者：
Sandipan Sengupta
中科院分区：
文献类型：
--
作者：
Suvikranth Gera;Sandipan Sengupta
摘要我们提出磁极的唯一可能实现是突现的，它是弯曲时空中的挠率缺陷的人工产物。这个特殊相的特征是真空中一阶引力的一类退化度规时空解。的（表观）磁荷示出有一个拓扑的起源，给出了一个较低的维对应的聂-严不变量。在距离上的可逆度规相位，这个拓扑荷被反射为（磁性）Reissner-Nordstrom荷给渐近观察者，即使缺陷本身仍然隐藏。
Abstract We propose that the only possible realization of a magnetic pole is emergent, it being an artefact of a torsion defect in a curved spacetime. This special phase is characterized by a class of degenerate metric spacetime solutions of first order gravity in vacuum. The (apparent) magnetic charge is shown to have a topological origin, given by a lower dimensional counterpart of the Nieh-Yan invariant. At the invertible metric phase at a distance, this topological charge gets reflected as the (magnetic) Reissner-Nordstrom charge to an asymptotic observer, even though the defect itself remains hidden.