Nonrelativistic expansion of Dirac equation with spherical scalar and vector potentials by similarity renormalization group
Abstract
By following the conventional similarity renormalization group (SRG) expansion of the Dirac equation developed in [J.-Y. Guo, Phys. Rev. C 85, 021302 (2012)], 10.1103/PhysRevC.85.021302, we work out the analytic expression of the 1 /M4 order and verify the convergence of this method. As a step further, the reconstituted SRG method is proposed by using the resummation technique. The speed of convergence of the reconstituted SRG becomes much faster than the conventional one, and the single-particle densities with the reconstituted SRG are also almost identical to the exact values.
- Publication:
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Physical Review C
- Pub Date:
- May 2019
- DOI:
- 10.1103/PhysRevC.99.054324
- arXiv:
- arXiv:1904.04418
- Bibcode:
- 2019PhRvC..99e4324G
- Keywords:
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- Nuclear Theory;
- Mathematical Physics;
- Quantum Physics
- E-Print:
- 10 pages, 3 figures, and 8 tables