Determining Factors for the Accuracy of DMRG in Chemistry
  The Density Matrix Renormalization Group (DMRG) algorithm has been a rising star for the accurate ab initio exploration of Born-Oppenheimer potential energy surfaces in theoretical chemistry. However, owing to its iterative numerical nature, pit falls, that can affect the accuracy of DMRG energies, need to be circumvented. Here, after a brief introduction into this quantum chemical method, we discuss criteria that determine the accuracy of DMRG calculations. 
Sebastian F. Keller and Markus Reiher
physics.chem-ph cond-mat.str-el physics.comp-ph quant-ph