Closed Timelike Curves in the Galileon Model
High Energy Physics - Theory
2015-05-28 v2
Abstract
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.
Keywords
Cite
@article{arxiv.1106.0570,
title = {Closed Timelike Curves in the Galileon Model},
author = {Jarah Evslin and Taotao Qiu},
journal= {arXiv preprint arXiv:1106.0570},
year = {2015}
}
Comments
16 pages, 2 jpg figures, version published in JHEP (Nov 8) add refs, details and stability analysis