Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2011-12-02
Physics
High Energy Physics
High Energy Physics - Theory
3 pages, letter style, 1 figure
Scientific paper
We point out that the metrics recently proposed by K. Balasubramanian and J. McGreevy \cite{BalaMcGreevyLifshitz} as gravitational duals to Lifshitz Chern-Simons gauge theories contain both a hidden null singularity and a region of closed timelike curves accessible to asymptotic observers. Like the singularity in the original Liftshitz spacetime given by Kachru, Liu, and Mulligan, this singularity does not include large $\alpha'$ or $g_s$ corrections and hence appears to be singular in string theory as well as classically.
Copsey Keith
Mann Robert B.
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