Nonlinear scalarization and thermodynamics in Einstein-Phantom scalar-Gauss-Bonnet theory

Tian-Zhen Dai, Yun Soo Myung, De-Cheng Zou +4

We study nonlinear scalarization of Schwarzschild black-holes for a phantom scalar coupled to the Gauss--Bonnet invariant. Three polynomial couplings satisfying ${\zeta }^{\prime \prime }(0)=0$ are intr…