Energy of strongly attractive Bose-Fermi mixtures
  We discuss how approximate theories for Bose-Fermi mixtures recover in the molecular limit the expected expression for Fermi-Fermi mixtures of molecules and unpaired fermions. In particular, we compare the energy of the system resulting from a T-matrix diagrammatic approach with that obtained with Variational and Fixed-Node Diffusion Quantum Monte Carlo methods. 
Andrea Guidini, Elisa Fratini, Gianluca Bertaina, Pierbiagio Pieri
cond-mat.quant-gas