Tachyons in a slice of AdS
High Energy Physics - Theory
2010-11-19 v3
Abstract
Stability of AdS space allows scalar fields to have negative mass squared as long as the Breitenlohner-Freedman bound is satisfied. In a compactification of AdS instead, to avoid instabilities, a tachyonic bulk mass must be supplemented by appropriate brane actions. In this paper we clarify the meaning of the lower bound in the Randall-Sundrum scenario with two branes and explain how the instability disappears in the infinite space limit. A CFT interpretation is also given as radiative symmetry breaking.
Cite
@article{arxiv.hep-th/0301151,
title = {Tachyons in a slice of AdS},
author = {A. Delgado and M. Redi},
journal= {arXiv preprint arXiv:hep-th/0301151},
year = {2010}
}
Comments
7 pages, Latex2e, minor changes and ref. added, misprint fixed. Version to be published in Phys. Lett. B