2014

Black Holes in Bi-scalar Extensions of Horndeski Theories

Charmousis, Christos, Kolyvaris, Theodoros, Papantonopoulos, Eleftherios et al.

Understand

We study certain bi-scalar-tensor theories emanating from conformal symmetry requirements of Horndeski's four-dimensional action.

  • The former scalar is a Galileon with shift symmetry whereas the latter scalar is adjusted to have a higher order conformal coupling.
  • Employing technics from local Weyl geometry certain Galileon higher order terms are thus constructed to be conformally invariant.
  • The combined shift and partial conformal symmetry of the action, allow us to construct exact black hole solutions.

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