Few-Body Descriptions of the piNN System in Three and Four Dimensions

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We summarise the recent theoretical progress in few-body descriptions of the piNN system. Previous descriptions, both three- and four-dimensional, are shown to possess serious theoretical inconsistencies. We illustrate how three-dimensional approaches suffer from renormalisation problems, and how four-dimensional descriptions contain both overcounting and undercounting of diagrams. We then show how such theoretical problems have been recently overcome, leading to new practical few-body equations for the piNN system.
LaTeX, epsf, 8 pages + 6 figures (appended as uuencoded PS-files), invited talk at Symposium on Meson-Nucleon Physics..., Blaubeuren, Germany, July, '95. Shortened version with minor corrections

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Nuclear Theory

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http://salesiana.dossiersoluciones.com/handle/123456789/149500

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/nucl-th/9508027
 http://arxiv.org/abs/nucl-th/9508027

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arXiv