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    • Boson stars and black holes with complex and real scalar hairPeer reviewedOpen access 

      08 avril 2025, Brihaye, Yves; Buisseret, Fabien; Hartmann, Betti; Layfield, Oliver, CeREF Technique
      Article scientifique
      We discuss boson stars and black holes with scalar hair in a model where the complex scalar field forming the boson star and the hair on the black hole, respectively, interacts with a real scalar field via a H´enon-Heiles-type potential. We demonstrate that black holes and boson stars carrying only a real scalar field with cubic self-interaction are possible and that black holes with both real ...

    • ZN-balls: Solitons from ZN-symmetric scalar field theoryPeer reviewedOpen access 

      28 novembre 2022, BUISSERET, Fabien; Brihaye, Yves, CeREF Technique
      Article scientifique
      We discuss the conditions under which static, finite-energy, configurations of a complex scalar field ϕ with constant phase and spherically-symmetric norm exist in a potential of the form V(ϕ*ϕ, ϕ^N, ϕ^*N) with N ∈ N and N ≥ 2, i.e., a potential with a ZN-symmetry. Such configurations are called ZN-balls. We build explicit solutions in (3 + 1)-dimensions from a model mimicking effective field ...