Optimizing phonon space in the phonon-coupling model

  title={Optimizing phonon space in the phonon-coupling model},
  author={V. Tselyaev and N. Lyutorovich and Josef Speth and Paul-Gerhard Reinhard},
  journal={Physical Review C},
We present a new scheme to select the most relevant phonons in the phonon-coupling model, named here time-blocking approximation (TBA). The new criterion, based on the phonon-nucleon coupling strengths rather than on $B(EL)$ values, is more selective and thus produces much smaller phonon spaces in TBA. This is beneficial in two respects: first, it curbs down the computational cost, and second, it reduces the danger of double counting in the expansion basis of TBA. We use here TBA in a form… 
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