Two-Pion Exchange Nucleon-Nucleon Potential: Model Independent Features

A chiral pion-nucleon amplitude supplemented by the HJS subthreshold coefficients is used to calculate the the long range part of the two-pion exchange nucleon-nucleon potential. In our expressions the HJS coefficients factor out, allowing a clear identification of the origin of the various contribu...

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Bibliographic Details
Published in:arXiv.org 1996-11
Main Authors: Robilotta, Manoel R, da Rocha, Carlos A
Format: Article
Language:English
Subjects:
Exchanging
Nucleon potential
Online Access:Get full text
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Summary:A chiral pion-nucleon amplitude supplemented by the HJS subthreshold coefficients is used to calculate the the long range part of the two-pion exchange nucleon-nucleon potential. In our expressions the HJS coefficients factor out, allowing a clear identification of the origin of the various contributions. A discussion of the configuration space behaviour of the loop integrals that determine the potential is presented, with emphasis on cancellations associated with chiral symmetry. The profile function for the scalar-isoscalar component of the potential is produced and shown to disagree with those of several semi-phenomenological potentials.
ISSN:2331-8422
DOI:10.48550/arxiv.9611056