Calculation of the static and dynamical correlation energy of pseudo-one-dimensional beryllium systems via a many-body expansion.

  title={Calculation of the static and dynamical correlation energy of pseudo-one-dimensional beryllium systems via a many-body expansion.},
  author={Denise M. Koch and Edoardo Fertitta and Beate Paulus},
  journal={The Journal of chemical physics},
  volume={145 2},
Due to the importance of both static and dynamical correlation in the bond formation, low-dimensional beryllium systems constitute interesting case studies to test correlation methods. Aiming to describe the whole dissociation curve of extended Be systems we chose to apply the method of increments (MoI) in its multireference (MR) formalism. To gain insight into the main characteristics of the wave function, we started by focusing on the description of small Be chains using standard quantum… 
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