Using CIPSI nodes in diffusion Monte Carlo
  Several aspects of the recently proposed DMC-CIPSI approach consisting in using selected Configuration Interaction (SCI) approaches such as CIPSI (Configuration Interaction using a Perturbative Selection done Iteratively) to build accurate nodes for diffusion Monte Carlo (DMC) calculations are presented and discussed. The main ideas are illustrated with a number of calculations for diatomics molecules and for the benchmark G1 set. 
Michel Caffarel, Thomas Applencourt, Emmanuel Giner, Anthony Scemama
physics.chem-ph