Further Investigation Of Relativistic Symmetry With The Similarity Renormalization Group
PHYSICAL REVIEW C(2013)
Abstract
Following a recent Rapid Communication [Jian-You Guo, Phys. Rev. C 85, 021302(R) (2012)], we present more details on the investigation of the relativistic symmetry by the use of the similarity renormalization group. By comparing the contributions of the different components in the diagonal Dirac Hamiltonian to the pseudospin splitting, we have found that two components of the dynamical term make a similar influence on the pseudospin symmetry. The same case also appears in the spin-orbit interactions. Further, we have checked the influences of every term on the pseudospin splitting and their correlations with the potential parameters for all the available pseudospin partners. The result shows that the spin-orbit interactions always play a role in favor of the pseudospin symmetry, and whether the pseudospin symmetry is improved or destroyed by the dynamical term relating the shape of the potential as well as the quantum numbers of the state. The reason why the pseudospin symmetry becomes better for the levels closer to the continuum is disclosed. DOI:10.1103/PhysRevC.87.044311
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Key words
relativistic symmetry,similarity renormalization group,renormalization group
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