An approximate coupled cluster theory via nonlinear dynamics and synergetics: The adiabatic decoupling conditions.

  title={An approximate coupled cluster theory via nonlinear dynamics and synergetics: The adiabatic decoupling conditions.},
  author={Valay Agarawal and Chayan Patra and Rahul Maitra},
  journal={The Journal of chemical physics},
  volume={155 12},
The coupled cluster iteration scheme is analyzed as a multivariate discrete time map using nonlinear dynamics and synergetics. The nonlinearly coupled set of equations to determine the cluster amplitudes are driven by a fraction of the entire set of cluster amplitudes. These driver amplitudes enslave all other amplitudes through a synergistic inter-relationship, where the latter class of amplitudes behave as the auxiliary variables. The driver and the auxiliary variables exhibit vastly… 
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