# Optimizing phonon space in the phonon-coupling model

@article{Tselyaev2017OptimizingPS, 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}, year={2017}, volume={96}, pages={024312} }

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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## References

SHOWING 1-10 OF 50 REFERENCES

Nuclear Structure, Volume II: Nuclear Deformations

- Physics
- 1975

Volume II, together with Volume I, contains a systematic treatment of the basis that has been gradually established during the last decades for understanding the vast body of data on nuclear…

Nuclear Collective Motion: Models and Theory

- Physics
- 2010

Phenomenological Models: General Trends and Coupling Schemes The Collective Vibrational Model The Unified Model for Vibrations The Vibrating Potential Model The E1 Photoresonance The Collective…

Electric and magnetic giant resonances in nuclei

- Physics
- 1991

Theory of giant resonances, J. Speth and J. Wambach the electric giant resonances, A. van der Woude decay of giant resonances, K.T. Knoepfle and G.J. Wagner giant magnetic resonances, S. Raman, L.W.…

"J."

- PhilosophyThe New Yale Book of Quotations
- 2021

however (for it was the literal soul of the life of the Redeemer, John xv. io), is the peculiar token of fellowship with the Redeemer. That love to God (what is meant here is not God’s love to men)…

Nuclear Data Sheets for A = 108☆

- Physics
- 1997

Abstract This evaluation for A = 108 updates one by J. Blachot (1997B109), published in Nuclear Data Sheets 81, 599 (1997), mainly from XUNDL.