Nuclear Physics Around the Unitarity Limit
We argue that many features of the structure of nuclei emerge from a strictly perturbative expansion around the unitarity limit, where the two-nucleon S waves have bound states at zero energy. In this limit, the gross features of states in the nuclear chart are correlated to only one dimensionful pa...
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| Veröffentlicht in: | Physical review letters 2017-05, Vol.118 (20), p.202501-202501, Article 202501 |
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| container_title | Physical review letters |
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| creator | König, Sebastian Grießhammer, Harald W Hammer, H-W van Kolck, U |
| description | We argue that many features of the structure of nuclei emerge from a strictly perturbative expansion around the unitarity limit, where the two-nucleon S waves have bound states at zero energy. In this limit, the gross features of states in the nuclear chart are correlated to only one dimensionful parameter, which is related to the breaking of scale invariance to a discrete scaling symmetry and set by the triton binding energy. Observables are moved to their physical values by small perturbative corrections, much like in descriptions of the fine structure of atomic spectra. We provide evidence in favor of the conjecture that light, and possibly heavier, nuclei are bound weakly enough to be insensitive to the details of the interactions but strongly enough to be insensitive to the exact size of the two-nucleon system. |
| doi_str_mv | 10.1103/PhysRevLett.118.202501 |
| format | Article |
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| source | American Physical Society Journals |
| subjects | 70 PLASMA PHYSICS AND FUSION TECHNOLOGY Effective Field Theory Few-body Systems Nuclear binding Nuclear forces Nuclear Theory Physics |
| title | Nuclear Physics Around the Unitarity Limit |
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