Marco Bruni                                  GGI Florence, October 2006
 Bianchi I dynamics
§left: a>-1, Minkowski future attractor
§right: a<-1,de Sitter future attractor, phantom below separatrix   r = rL
§non phantom: isotropic past attractor in both cases, Kasner is a saddle point (past attractor for phantom)
§
X and Z: compactified energy density and shear