Strong cosmic censorship for a scalar field in a logarithmic-de Sitter black hole

Yiqian Chen,Qingyu Gan,Guangzhou Guo

Figure 3. β for a neutral massless scalar field with M = 16π, and Λ = 0.06. The green dashed line and the red dashed line correspond to the extremal black hole (Q = Qext) and lower bound (bQ3 = k) of the allowed region, respectively. The solid thick black line represents $\beta =\tfrac{1}{2}$, which divides the parameter space into two parts, where SCC is violated above the black line while respected under it.