Phys. Rev. D 55, 826–828 (1997)Electric-magnetic black hole dualityReceived 19 July 1996; published in the issue dated 15 January 1997 We generalize duality invariance for the free Maxwell action in an arbitrary background geometry to include the presence of electric and magnetic charges. In particular, it follows that the actions of equally charged electric and magnetic black holes are equal. © 1997 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevD.55.826
DOI:
10.1103/PhysRevD.55.826
PACS:
04.70.Bw, 04.20.Cv, 04.20.Fy, 11.30.Ly
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