Implementation of the linear method for the optimization of Jastrow-Feenberg and backflow correlations

@article{Motta2015ImplementationOT,
  title={Implementation of the linear method for the optimization of Jastrow-Feenberg and backflow correlations},
  author={Mario Motta and G. Bertaina and Davide Emilio Galli and Ettore Vitali},
  journal={Comput. Phys. Commun.},
  year={2015},
  volume={190},
  pages={62-71}
}
Abstract We present a fully detailed and highly performing implementation of the Linear Method (Toulouse and Umrigar, 2007) to optimize Jastrow–Feenberg and Backflow Correlations in many-body wave-functions, which are widely used in condensed matter physics. We show that it is possible to implement such optimization scheme performing analytical derivatives of the wave-function with respect to the variational parameters achieving the best possible complexity O ( N 3 ) in the number of particles… 
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