We study the evolution of a five-dimensional rotating black hole emitting scalar field radiation via the Hawking process for arbitrary initial values of the two rotation parameters $a$ and $b$. It is found that any such black hole whose initial rotation parameters are both nonzero evolves toward an asymptotic state $a/M^{ 1/2}=b/M^{ 1/2}={ \rm const}(\neq 0)$, where this constant is independent of the initial values of $a$ and $b$.
Categories: hep-th gr-qc