2024/01/17 by Xiao Yan Chew, Dong-han Yeom, Chew, Xiao Yan +1
Physics and Astronomy · #Astrophysical Phenomena and Observations #Black Holes and Theoretical Physics #Cosmology and Gravitation Theories #FOS: Physical sciences #General Relativity and Quantum Cosmology (gr-qc) #High Energy Physics - Theory (hep-th) #Mathematical Physics (math-ph)
paper · pdf · doi:10.48550/arxiv.2401.09039
openalex publication_date 2024/01/17 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We minimally coupled a scalar potential V(ϕ) with asymmetric vacua to the Einstein gravity to numerically construct the hairy Reissner-Nordstrom black hole (RNBH) as a direct generalization of RNBHs to possess scalar hair. By fixing the electric charge to mass ratio q, a branch of hairy RNBHs bifurcates from the RNBH when the scalar field ϕH is non-trivial at the horizon. The values of q are bounded for 0 ≤ q ≤ 1, which contrast to a class of hairy black holes with q>1 in the Einstein-Maxwell-scalar theory. We find that the profiles of solutions affected by the competition between the strength of ϕH and q, for instance, the gradient of scalar field at the horizon can increase very sharply when q → 1 and ϕH is small but its gradient can be very small which independent of q when ϕH is large. Furthermore, the weak energy condition of hairy RNBHs, particularly at the horizon can be satisfied when q>0.