Quantum Dynamical Microscopic Approach to Stellar Carbon Burning
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arXiv
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| Hauptverfasser: | , , |
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| Format: | Preprint |
| Veröffentlicht: |
2025
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| _version_ | 1866915498443145216 |
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| author | Close, Grant Stevenson, Paul Diaz-Torres, Alexis |
| author_facet | Close, Grant Stevenson, Paul Diaz-Torres, Alexis |
| contents | The process of carbon burning is vital to understanding late stage stellar evolution of massive stars and the conditions of certain supernovae. Carbon burning is a complex problem, involving quantum tunnelling and nuclear molecular states. Quantum dynamical calculations of carbon burning are presented, combining the time-dependent wave-packet method and the density-constrained time-dependent Hartree-Fock (DC-TDHF) approach. By limiting the contribution of triaxial molecular configurations to fusion, we demonstrate that the DC-TDHF interaction potential successfully explains the appearance of some resonant structures in the sub-barrier fusion cross-section. This result shows the critical role of nucleon-nucleon interactions in the 12C + 12C fusion resonances observed at astrophysical energies. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2502_11240 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Quantum Dynamical Microscopic Approach to Stellar Carbon Burning Close, Grant Stevenson, Paul Diaz-Torres, Alexis Nuclear Theory The process of carbon burning is vital to understanding late stage stellar evolution of massive stars and the conditions of certain supernovae. Carbon burning is a complex problem, involving quantum tunnelling and nuclear molecular states. Quantum dynamical calculations of carbon burning are presented, combining the time-dependent wave-packet method and the density-constrained time-dependent Hartree-Fock (DC-TDHF) approach. By limiting the contribution of triaxial molecular configurations to fusion, we demonstrate that the DC-TDHF interaction potential successfully explains the appearance of some resonant structures in the sub-barrier fusion cross-section. This result shows the critical role of nucleon-nucleon interactions in the 12C + 12C fusion resonances observed at astrophysical energies. |
| title | Quantum Dynamical Microscopic Approach to Stellar Carbon Burning |
| topic | Nuclear Theory |
| url | https://arxiv.org/abs/2502.11240 |