dorsal/arxiv
View SchemaVibrations versus collisions and the iterative structure of two-body dynamics
| Authors | Alfred Pfitzner, Wolfgang Cassing, Andreas Peter |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/9404020 |
| URL | https://arxiv.org/abs/nucl-th/9404020 |
| DOI | 10.1016/0375-9474(94)90943-1 |
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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"abstract": "We adopt a truncated version of two-body dynamics by neglecting three-body\ncorrelations, as is supported by microscopic numerical calculations.\nIntroducing orthogonal channel correlations for the pp- and the ph-channel and\nintegrating the latter in terms of vibrational RPA-states we derive a retarded\ntwo-body equation. Its solution is nonperturbative with respect to loops,\nladders and mixed contributions. In the stationary limit we obtain an equation\nfor a generalised effective interaction which iterates both the G-matrix and\nthe polarisation matrix. An in-medium scattering approach transparently\ndemonstrates the collisional damping of the vibrations.",
"arxiv_id": "nucl-th/9404020",
"authors": [
"Alfred Pfitzner",
"Wolfgang Cassing",
"Andreas Peter"
],
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"nucl-th"
],
"doi": "10.1016/0375-9474(94)90943-1",
"title": "Vibrations versus collisions and the iterative structure of two-body dynamics",
"url": "https://arxiv.org/abs/nucl-th/9404020"
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