Scattering from bound states and the validity of fixed scatterer models

Scattering from bound states and the validity of fixed scatterer models

For hadron-nucleus scattering one frequently employs the fixed scatterer approximation (FSA). We show that for non-local interactions this approximation violates Galilean invariance, leading to both formal and numerical inconsistencies. However we have verified with a simple but realistic model the...

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Veröffentlicht in:Nuclear physics. A 1976-01, Vol.274 (3), p.525-532
Hauptverfasser: Benayoun, J.J., Gignoux, C., Gillespie, J.
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Nuclear Theory
Physics
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container_issue 3
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container_title Nuclear physics. A
container_volume 274
creator Benayoun, J.J.
Gignoux, C.
Gillespie, J.
description For hadron-nucleus scattering one frequently employs the fixed scatterer approximation (FSA). We show that for non-local interactions this approximation violates Galilean invariance, leading to both formal and numerical inconsistencies. However we have verified with a simple but realistic model the accuracy of the closure approximation on the target Hamiltonian both with separable and local interactions. Only for local interactions is the FSA equivalent to closure.
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Physics
title Scattering from bound states and the validity of fixed scatterer models
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