Negative Energy in String Theory and Cosmic Censorship Violation

Details Negative Energy in String Theory and Cosmic Censorship Violation Negative Energy in String Theory and Cosmic Censorship Violation

2003-10-06

arxiv.org/abs/hep-th/0310054v2

Phys.Rev. D69 (2004) 105001

Physics

High Energy Physics

High Energy Physics - Theory

23 pages, 2 figures, v2: argument for forming naked singularities clarified, references added

Scientific paper

10.1103/PhysRevD.69.105001

We find asymptotically anti de Sitter solutions in N=8 supergravity which have negative total energy. This is possible since the boundary conditions required for the positive energy theorem are stronger than those required for finite mass (and allowed by string theory). But stability of the anti de Sitter vacuum is still ensured by the positivity of a modified energy, which includes an extra surface term. Some of the negative energy solutions describe classical evolution of nonsingular initial data to naked singularities. Since there is an open set of such solutions, cosmic censorship is violated generically in supergravity. Using the dual field theory description, we argue that these naked singularities will be resolved in the full string theory.

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