Creating Naked Singularities and Negative Energy

Details Creating Naked Singularities and Negative Energy Creating Naked Singularities and Negative Energy

Aug 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005stc..conf...86h&link_type=abstract

STRING THEORY AND COSMOLOGY. Proceedings of Nobel Symposium 127. Held 14-19 August 2003 in Sigtuna, Sweden. Edited by U Danielss

Computer Science

Scientific paper

A brief review is given of three recent results concerning classical solutions of gravitational theories: (1) With asymptotically anti de Sitter boundary conditions, there are matter theories satisfying the positive energy theorem which violate cosmic censorship. (2) Despite supersymmetry, there are solutions to {N} = 8 supergravity in which the total gravitational energy is arbitrarily negative. This theory can also violate cosmic censorship. (3) A large class of supersymmetric compactifications (including all simply connected Calabi-Yau manifolds) have solutions with negative four dimensional effective energy density.

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