Journal
EUROPEAN PHYSICAL JOURNAL A
Volume 57, Issue 5, Pages -Publisher
SPRINGER
DOI: 10.1140/epja/s10050-021-00448-1
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This paper discusses the evolution of breakup models from fully quantum mechanical to semiclassical approximations, emphasizing the importance of using energy dependent interactions and energy averaging procedures in implementing a quantum mechanical model of breakup. The relationship between different methods is clarified.
In this paper, we discuss the evolution of breakup models from fully quantum mechanical, such as the Ichimura-Austern-Vincent model to semiclassical, to eikonal approximations following the insight on the mechanism first proposed by Hussein and McVoy (HM) for the presently called stripping term. In particular we concentrate on, and stress that, the correct implementation of a quantum mechanical model of breakup requires the use of energy dependent interactions and the energy averaging procedure is a key point to understand the difference among models. On the other hand using fixed energy potentials is one of the steps towards the high energy eikonal limit first proposed by HM. However the intermediate semiclassical transfer to the continuum model of Bonaccorso and Brink does use an energy dependent nucleon-target optical potential, while fixing the core-target interaction at the incident energy. The relationship between these methods is clarified.
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