Meronic Einstein-Yang-Mills black hole in 5D and gravitational spin from isospin effect

Fabrizio Canfora, Andrés Gomberoff, Seung Hun Oh, Francisco Rojas, Patricio Salgado-Rebolledo

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12 Scopus citations


We construct an analytic black hole solution in SU(2) Einstein-Yang-Mills theory in five dimensions supporting a Meron field. The gauge field is proportional to a pure gauge and has a non-trivial topological charge. The would-be singularity at the Meron core gets shielded from the exterior by the black hole horizon. The metric has only one integration constant, namely, its ADM mass, which is shown to be finite once an appropriate boundary term is added to the action. The thermodynamics is also worked out, and a first-order phase transition, similar to the one occurring in the Reissner-Nordström case is identified. We also show that the solution produces a spin from isospin effect, i.e., even though the theory is constructed out of bosons only, the combined system of a scalar field and this background may become fermionic. More specifically, we study scalar excitations in this purely bosonic background and find that the system describes fermionic degrees of freedom at spatial infinity. Finally, for the asymptotically AdS5 case, we study its consequences in the context of the AdS/CFT correspondence.

Original languageEnglish
Article number81
JournalJournal of High Energy Physics
Issue number6
StatePublished - 1 Jun 2019
Externally publishedYes


  • Black Holes
  • Field Theories in Higher Dimensions
  • Gauge Symmetry
  • Solitons Monopoles and Instantons


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