Chronology Protection in AdS/CFT
High Energy Physics - Theory
2009-11-11 v1
Abstract
We review the issue of chronology protection and show how string theory can solve it in the half BPS sector of AdS/CFT. According to the LLM prescription, half BPS excitations of AdS_5 x S^5 geometries in type IIB string theory can be mapped into free fermion configurations. We show that unitarity of the theory describing these fermions is intimately related to the protection of the chronology in the dual geometries.
Cite
@article{arxiv.hep-th/0602293,
title = {Chronology Protection in AdS/CFT},
author = {Marco M. Caldarelli},
journal= {arXiv preprint arXiv:hep-th/0602293},
year = {2009}
}
Comments
7 pages, 7 figures, contribution to the proceedings of the RTN workshop "Constituents, Fundamental Forces and Symmetries of the Universe", Corfu, Greece, 20-26 September 2005