Quasinormal modes of Gauss-Bonnet black holes at large D

Understand

Einstein's General Relativity theory simplifies dramatically in the limit that the spacetime dimension D is very large.

• This could still be true in the gravity theory with higher derivative terms.
• In this paper, as the first step to study the gravity with a Gauss-Bonnet(GB) term, we compute the quasi-normal modes of the spherically symmetric GB black hole in the large D limit.
• When the GB parameter is small, we find that the non-decoupling modes are the same as the Schwarzschild case and the decoupled modes are slightly modified by the GB term.