Asymptotic Entanglement and Lindblad Dynamics: a Perturbative Approach
  We consider an open bipartite quantum system with dissipative Lindblad type dynamics. In order to study the entanglement of the stationary states, we develop a perturbative approach and apply it to the physically significant case when a purely dissipative perturbation is added to the unperturbed generator which by itself would produce reversible unitary dynamics. 
Fabio Benatti, Adam Nagy, Heide Narnhofer
quant-ph