期刊
PHYSICAL REVIEW C
卷 89, 期 1, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevC.89.014334
关键词
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资金
- US Department of Energy (University of Tennessee) [DE-FG02-96ER40963, DE-AC05-00OR22725]
- UT-Battelle, LLC (Oak Ridge National Laboratory)
- Alexander-von-Humboldt Foundation
We extend effective field theory to the case of spontaneous symmetry breaking in genuinely finite quantum systems such as small superfluid systems, molecules, or atomic nuclei and focus on deformed nuclei. In finite superfluids, symmetry arguments alone relate the spectra of systems with different particle numbers. For systems with nonspherical intrinsic ground states such as atomic nuclei or molecules, symmetry arguments alone yield the universal features of the low-lying excitations as vibrations that are the heads of rotational bands. The low-lying excitations in deformed nuclei differ from those in molecules because of symmetry properties caused by pairing.
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