Enhancement of deltaful two-pion exchange nuclear forces
Fuente:
arXiv
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| Autores principales: | , , , |
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| Formato: | Preprint |
| Publicado: |
2024
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| Materias: | |
| Acceso en línea: | |
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| _version_ | 1866909266859786240 |
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| author | Chen, Haiming Peng, Rui Lyu, Songlin Long, Bingwei |
| author_facet | Chen, Haiming Peng, Rui Lyu, Songlin Long, Bingwei |
| contents | The role of the delta isobar degrees of freedom in nucleon-nucleon scattering is revisited. We attempt to understand why the dimensionally regularized two-pion exchanges with the explicit delta isobar is much stronger than the ones with spectral function regularization. When the cutoff value of spectral function regularization is varied, the isoscalar central component exhibits a rather large cutoff variation. This reveals a surprisingly large numerical factor of the deltaful two-pion exchange potentials. The power counting is adjusted accordingly and we discuss the results and how to improve upon this finding. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2407_17069 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Enhancement of deltaful two-pion exchange nuclear forces Chen, Haiming Peng, Rui Lyu, Songlin Long, Bingwei Nuclear Theory The role of the delta isobar degrees of freedom in nucleon-nucleon scattering is revisited. We attempt to understand why the dimensionally regularized two-pion exchanges with the explicit delta isobar is much stronger than the ones with spectral function regularization. When the cutoff value of spectral function regularization is varied, the isoscalar central component exhibits a rather large cutoff variation. This reveals a surprisingly large numerical factor of the deltaful two-pion exchange potentials. The power counting is adjusted accordingly and we discuss the results and how to improve upon this finding. |
| title | Enhancement of deltaful two-pion exchange nuclear forces |
| topic | Nuclear Theory |
| url | https://arxiv.org/abs/2407.17069 |