EMBEDDING AS A SUBSTITUTE FOR THE KRUSKAL MAXIMAL EXTENSION

Abstract

We consider the Minkowski embedding space of the Reissner–Nordstrom solution to show that the embedding space plays the same role as the Kruskal maximal extension. We point out that a static observer in Reissner–Nordstrom exterior geometry is a particular kind of uniformly accelerated observer in the six-dimensional Minkowski embedding space and therefore he experiences a thermal bath of Rindler particles. However, since the static observer is restricted to a 4-D manifold, his horizon, unlike accelerated observer's horizon, is finite and so is the entropy.