Remarkable independence of dynamical polarization potentials of the underlying potential

Mackintosh, R. S. and Keeley, N. (2018). Remarkable independence of dynamical polarization potentials of the underlying potential. Physical Review C, 98 pp. 1–4.

DOI: https://doi.org/10.1103/PhysRevC.98.024624

Abstract

The dynamical polarization potential (DPP) generated by the coupling of specific reaction channels to the elastic channel can be determined by inverting the elastic channel S matrix from a coupled reaction channel (CRC) calculation. The “bare” potential of the CRC calculation is then subtracted from the inverted potential to yield a local representation of the DPP. Here we study the extent to which the DPP calculated in this way depends upon the bare potential. We find that the DPP caused by coupling to pickup channels, for 30.3 MeV protons scattering from ⁴⁰Ca, turns out to be qualitatively and almost quantitatively unaffected by substantial changes in the bare potential. This puts the properties of DPPs established in this way on a firmer foundation.

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