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Journal Article
Tensor coupling effect on relativistic symmetries
2016
Overview
The similarity renormalization group is used to transform the Dirac Hamiltonian with tensor coupling into a diagonal form. The upper（lower） diagonal element becomes a Schr¨odinger-like operator with the tensor component separated from the original Hamiltonian.Based on the operator, the tensor effect of the relativistic symmetries is explored with a focus on the single-particle energy contributed by the tensor coupling. The results show that the tensor coupling destroying（improving） the spin（pseudospin） symmetry is mainly attributed to the coupling of the spin-orbit and the tensor term, which plays an opposite role in the single-particle energy for the（pseudo-） spin-aligned and spin-unaligned states and has an important influence on the shell structure and its evolution.
Publisher
Science China Press,Springer Nature B.V
Subject
