Improving the predictive power of empirical shell-model Hamiltonians
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arXiv
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| Hauptverfasser: | , , , , |
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| Format: | Preprint |
| Veröffentlicht: |
2024
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| _version_ | 1866916704630603776 |
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| author | Purcell, J. A. Brown, B. A. He, B. C. Stroberg, S. R. Walters, W. B. |
| author_facet | Purcell, J. A. Brown, B. A. He, B. C. Stroberg, S. R. Walters, W. B. |
| contents | We present two developments which enhance the predictive power of empirical shell-model Hamiltonians for cases in which calibration data are sparse. A recent improvement in the ab initio derivation of effective Hamiltonians leads to a much better starting point for the optimization procedure. In addition, we introduce a protocol to avoid overfitting, enabling a more reliable extrapolation beyond available data. These developments will enable more robust predictions for exotic isotopes produced at rare isotope beam facilities and in astrophysical environments. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2412_09917 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Improving the predictive power of empirical shell-model Hamiltonians Purcell, J. A. Brown, B. A. He, B. C. Stroberg, S. R. Walters, W. B. Nuclear Theory We present two developments which enhance the predictive power of empirical shell-model Hamiltonians for cases in which calibration data are sparse. A recent improvement in the ab initio derivation of effective Hamiltonians leads to a much better starting point for the optimization procedure. In addition, we introduce a protocol to avoid overfitting, enabling a more reliable extrapolation beyond available data. These developments will enable more robust predictions for exotic isotopes produced at rare isotope beam facilities and in astrophysical environments. |
| title | Improving the predictive power of empirical shell-model Hamiltonians |
| topic | Nuclear Theory |
| url | https://arxiv.org/abs/2412.09917 |