Polarizable density embedding: a new QM/QM/MM-based computational strategy.We present a new QM/QM/MM-based model for calculating molecular properties and excited states of solute-solvent systems.  We denote this new approach the polarizable density embedding (PDE) model, and it represents an extension of our previously developed polarizable embedding (PE) strategy. 
Polarizable density embedding
We denote this new approach the polarizable density embedding (PDE) model, and it represents an extension of our previously developed polarizable embedding (PE) strategy. 
Polarizable embedding