Closed Timelike Curves in the Galileon Model

Details Closed Timelike Curves in the Galileon Model Closed Timelike Curves in the Galileon Model

2011-06-03

arxiv.org/abs/1106.0570v2

JHEP11(2011)032

Physics

High Energy Physics

High Energy Physics - Theory

16 pages, 2 jpg figures, version published in JHEP (Nov 8) add refs, details and stability analysis

Scientific paper

It has long been known that generic solutions to the nonlinear DGP and Galileon models admit superluminal propagation. In this note we present a solution of these models which also admits closed timelike curves (CTCs). We observe that these CTCs only arise when, according to each observer, there exists some region in which the higher derivative terms are larger than the 2-derivative kinetic term.

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