Recent content by supakorn

thank you so much.

I'm reading this paper "Exact Gravitational Quasinormal Frequencies of Topological Black Holes" ...By D. Birmingham and S. Mokhtari : http://arxiv.org/abs/hep-th/0609028v2" and now i confusing what are meaning of gravitational quasinormal modes of Topological Black holes?. Can...

From the Schwarzschild solution.This solution has two singularities,one at r = 0 and one at r = 2M.I have a questions 1.Every Mass has these singularities ? 2.For singularity at r = 0 it is the center of mass ? thank you

thank you so much

what is the meaning of topological black holes? thanks

thank you so much

Why the physicists studying a "AdS black hole"? what is the meaning of AdS (Anti de Sitter) for black hole? and why not we study de Sitter black hole?

I'm Done (but Not Sure).phi Defined On The Flat Space,i Will Post My Answer Next Time.now I'm Happy.

it not HW but i read and try to prove.For PHI, it is a skewsymmetric.

From Bergmann chapter 8.Please show that (see at Fig. below)...thank you.

if a ball of mass m moving under the potential : V(z) = mgz for z > 0 and V(z) = \infty for z \leq0.What is the value of T : (Transmission coefficient)? i get : T = 0