2017/06/15 by Lavinia Heisenberg, Ryotaro Kase, Masato Minamitsuji +1 · 3 citations
Mathematics · Physics and Astronomy · #Black Holes and Theoretical Physics #Black hole (networking) #Classical mechanics #Cosmology and Gravitation Theories #General relativity #Geometry #Gravitation #Killing vector field #Mathematical physics #Mathematics #Physics #Pulsars and Gravitational Waves Research #Scalar (mathematics) #Schwarzschild metric #Tensor (intrinsic definition) #Theoretical physics #Vector field #astro-ph.CO #gr-qc #hep-ph #hep-th
paper · pdf · doi:10.1088/1475-7516/2017/08/024
28 pages, 4 figures
arxiv created 2017/06/15 · openalex publication_date 2017/08/21 · arxiv updated 2017/08/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/06
We study static and spherically symmetric black hole (BH) solutions in second-order generalized Proca theories with nonminimal vector field derivative couplings to the Ricci scalar, the Einstein tensor, and the double dual Riemann tensor. We find concrete Lagrangians which give rise to exact BH solutions by imposing two conditions of the two identical metric components and the constant norm of the vector field. These exact solutions are described by either Reissner-Nordström (RN), stealth Schwarzschild, or extremal RN solutions with a non-trivial longitudinal mode of the vector field. We then numerically construct BH solutions without imposing these conditions. For cubic and quartic Lagrangians with power-law couplings which encompass vector Galileons as the specific cases, we show the existence of BH solutions with the difference between two non-trivial metric components. The quintic-order power-law couplings do not give rise to non-trivial BH solutions regular throughout the horizon exterior. The sixth-order and intrinsic vector-mode couplings can lead to BH solutions with a secondary hair. For all the solutions, the vector field is regular at least at the future or past horizon. The deviation from General Relativity induced by the Proca hair can be potentially tested by future measurements of gravitational waves in the nonlinear regime of gravity.