Dynamical Instability of Self-Tuning Solution with Antisymmetric Tensor Field

Details Dynamical Instability of Self-Tuning Solution with Antisymmetric Tensor Field Dynamical Instability of Self-Tuning Solution with Antisymmetric Tensor Field

2001-09-24

arxiv.org/abs/hep-th/0109180v2

J.Phys.G28:1169-1178,2002

Physics

High Energy Physics

High Energy Physics - Theory

16 Pages, Latex; Discussion added but conclusions unchanged

Scientific paper

10.1088/0954-3899/28/6/301

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.

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