dorsal/arxiv
View SchemaThe Nuclear Central Force in the Chiral Limit
| Authors | John F. Donoghue |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/0603016 |
| URL | https://arxiv.org/abs/nucl-th/0603016 |
| DOI | 10.1103/PhysRevC.74.024002 |
| Journal | Phys.Rev.C74:024002,2006 |
Abstract
Chiral perturbation theory supplemented by the Omnes function is employed to study the strength of the isoscalar central nuclear interaction, G_S, in the chiral limit vs the physical case. A very large modification is seen, i.e. eta_s = G_S ~ chiral /G_S ~ physical = 1.37 +- 0.10 . This large effect is seen to arise dominantly at low energy from the extra contributions made by massless pions at energies near the physical threshold where the physical spectral function must vanish kinematically. The slope away from the chiral limit, d_S, is also calculated and is correspondingly large. I also explain why this large variation is to be expected.
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"abstract": "Chiral perturbation theory supplemented by the Omnes function is employed to\nstudy the strength of the isoscalar central nuclear interaction, G_S, in the\nchiral limit vs the physical case. A very large modification is seen, i.e.\neta_s = G_S ~ chiral /G_S ~ physical = 1.37 +- 0.10 . This large effect is seen\nto arise dominantly at low energy from the extra contributions made by massless\npions at energies near the physical threshold where the physical spectral\nfunction must vanish kinematically. The slope away from the chiral limit, d_S,\nis also calculated and is correspondingly large. I also explain why this large\nvariation is to be expected.",
"arxiv_id": "nucl-th/0603016",
"authors": [
"John F. Donoghue"
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"doi": "10.1103/PhysRevC.74.024002",
"journal_ref": "Phys.Rev.C74:024002,2006",
"title": "The Nuclear Central Force in the Chiral Limit",
"url": "https://arxiv.org/abs/nucl-th/0603016"
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