Vibrations versus collisions and the iterative structure of two-body dynamics

Preprint

18 April 1994

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.nucl-th/9404020

Abstract

We adopt a truncated version of two-body dynamics by neglecting three-body correlations, as is supported by microscopic numerical calculations. Introducing orthogonal channel correlations for the pp- and the ph-channel and integrating the latter in terms of vibrational RPA-states we derive a retarded two-body equation. Its solution is nonperturbative with respect to loops, ladders and mixed contributions. In the stationary limit we obtain an equation for a generalised effective interaction which iterates both the G-matrix and the polarisation matrix. An in-medium scattering approach transparently demonstrates the collisional damping of the vibrations.

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All Related Versions

Version 1, 1994-04-18, ArXiv
Published version: Nuclear Physics A, 577 (3), 753.

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