104 citations · 2k across the 128 of their papers we have counts for
6 papers · 1 filter
(Un)balanced holographic superconductors with electric and spin motive force coupling
Nathalia P. Aprile, Betti Hartmann, Jutta Kunz
We study holographic phase transitions in (2+1) dimensions that possess interacting phases which result from a direct coupling between the two U(1) gauge fields. This can be interp…
Boson stars and black holes with wavy scalar hair
Yves Brihaye, Betti Hartmann
In this paper, we follow up on the discovery of a new type of solution in the Einstein-Maxwell system coupled minimally to a self-interacting complex scalar field. For sufficiently…
Horndeski Proca stars with vector hair
Y. Brihaye, B. Hartmann, B. Kleihaus +1
We study Proca stars in a vector-tensor gravity model inspired by Horndeski's generalized Einstein-Maxwell field equations, supplemented with a mass term for the vector field. We d…
Spherically symmetric charged black holes with wavy scalar hair
Y. Brihaye, B. Hartmann
We study standard Einstein-Maxwell theory minimally coupled to a complex valued and self-interacting scalar field. We demonstrate that new, previously unnoticed spherically symmetr…
Spontaneous scalarization of self-gravitating magnetic fields
Yves Brihaye, Rogério Capobianco, Betti Hartmann
In this paper, we study the spontaneous scalarization of an extended, self-gravitating system which is static, cylindrically symmetric and possesses electromagnetic fields. We demo…
Spontaneously vectorized Einstein-Gauss-Bonnet black holes
Simon Barton, Betti Hartmann, Burkhard Kleihaus +1
We construct spontaneously vectorized black holes where a real vector field is coupled to the Gauss-Bonnet invariant. We employ three coupling functions for the vector field, and d…