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Chern Index of Taub-Bolt instantons in Einstein-Born-Infeld gravity. (arXiv:1807.00808v1 [hep-th])
来源于:arXiv
Partition functions can be calculated by saddle point approximations whenever
regular solutions exist, as they dominate the path integral. We examine a
regular Taub-Bolt dyon of Einstein-Born-Infeld theory which has electric and
magnetic flux proportional to each other. Magnetic flux is found to be
essentially a winding number and the electric flux turns out to be indexed by
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