Dynamical Instability of Self-Tuning Solution with Antisymmetric Tensor Field
High Energy Physics - Theory
2008-11-26 v2
Abstract
We consider the dynamical stability of a static brane model that incorporates a three-index antisymmetric tensor field and has recently been proposed as a possible solution to the cosmological constant problem. Ultimately, we are able to establish the existence of time-dependent, purely gravitational perturbations. As a consequence, the static solution of interest is ``dangerously'' located at an unstable saddle point. This outcome is suggestive of a hidden fine tuning in what is an otherwise self-tuning model.
Keywords
Cite
@article{arxiv.hep-th/0109180,
title = {Dynamical Instability of Self-Tuning Solution with Antisymmetric Tensor Field},
author = {A. J. M. Medved},
journal= {arXiv preprint arXiv:hep-th/0109180},
year = {2008}
}
Comments
16 Pages, Latex; Discussion added but conclusions unchanged