The Freudenthal gauge symmetry of the black holes of N = 2 , d = 4 supergravity

  • Pietro Galli, Patrick Meessen, Tomás Ort́ın
  • Published 2013


We show that the representation of black-hole solutions in terms of the variables H which are harmonic functions in the supersymmetric case is non-unique due to the existence of a local symmetry in the effective action. This symmetry is a continuous (and local) generalization of the discrete Freudenthal transformations initially introduced for the black… (More)

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