Dynamical instability of self-tuning solution with antisymmetric tensor field

A J M Medved
2002 Journal of Physics G: Nuclear and Particle Physics  
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
more » ... is an otherwise self-tuning model.
doi:10.1088/0954-3899/28/6/301 fatcat:nty23a6qancdnnnr4exh6mpzbe