Stability of Einstein-Aether Cosmological Models
  We use a dynamical systems analysis to investigate the future behaviour of Einstein-Aether cosmological models with a scalar field coupling to the expansion of the aether and a non-interacting perfect fluid. The stability of the equilibrium solutions are analysed and the results are compared with the standard inflationary cosmological solutions and previously studied cosmological Einstein-Aether models. 
Patrik Sandin, Bassemah Alhulaimi and Alan Coley
gr-qc astro-ph.CO hep-th