dorsal/arxiv
View SchemaThe role of chiral symmetry in two-pion exchange nuclear potential
| Authors | C. A. da Rocha, M. R. Robilotta, J. L. Ballot |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/9608036 |
| URL | https://arxiv.org/abs/nucl-th/9608036 |
Abstract
We evaluate the two pion exchange contribution to the nucleon-nucleon potential in configuration space using a "minimal chiral model" containing only pions and nucleons. We argue that this model has nowadays a rather firm conceptual basis, which entitles it to become a standard ingredient of any modern potential. The main features of this model is that the scalar-isoscalar component of the interaction is relatively small, due to cancellations between large terms, and fails to reproduce the intermediate range attraction in the central channel. We show that chiral symmetry is the responsible for these large cancellations in the two-pion exchange nucleon-nucleon interaction, which are similar to those occuring in free pion-nucleon scattering. Another feature of the model is that these results do not depend on how chiral symmetry is implemented.
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"date_created": "2026-03-02T18:00:18.797000Z",
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"abstract": "We evaluate the two pion exchange contribution to the nucleon-nucleon\npotential in configuration space using a \"minimal chiral model\" containing only\npions and nucleons. We argue that this model has nowadays a rather firm\nconceptual basis, which entitles it to become a standard ingredient of any\nmodern potential. The main features of this model is that the scalar-isoscalar\ncomponent of the interaction is relatively small, due to cancellations between\nlarge terms, and fails to reproduce the intermediate range attraction in the\ncentral channel. We show that chiral symmetry is the responsible for these\nlarge cancellations in the two-pion exchange nucleon-nucleon interaction, which\nare similar to those occuring in free pion-nucleon scattering. Another feature\nof the model is that these results do not depend on how chiral symmetry is\nimplemented.",
"arxiv_id": "nucl-th/9608036",
"authors": [
"C. A. da Rocha",
"M. R. Robilotta",
"J. L. Ballot"
],
"categories": [
"nucl-th",
"hep-ph"
],
"title": "The role of chiral symmetry in two-pion exchange nuclear potential",
"url": "https://arxiv.org/abs/nucl-th/9608036"
},
"schema_id": "dorsal/arxiv",
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"execution_id": "b979d04b-f568-410b-9c34-4b5ee43b274c",
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"type": "Model",
"variant": "snapshot-2026-03-01",
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