Communications in Analysis and Geometry
Volume 17 (2009)
Backward Ricci flow on locally homogeneous 3-manifolds
Pages: 305 – 325
In this paper, we study the backward Ricci flow on locallyhomogeneous $3$-manifolds. We describe the long timebehavior and show that, typically and after a proper re-scaling,there is convergence to a sub-Riemannian geometry. A similarbehavior was observed by the authors in the case of the crosscurvature flow.