Effect of tensor couplings in a relativistic Hartree approach for finite nuclei

Details Effect of tensor couplings in a relativistic Hartree approach for finite nuclei Effect of tensor couplings in a relativistic Hartree approach for finite nuclei

2002-11-12

arxiv.org/abs/nucl-th/0211034v1

Phys.Rev. C67 (2003) 044318

Physics

Nuclear Physics

Nuclear Theory

31 pages, 4 postscript figures included

Scientific paper

10.1103/PhysRevC.67.044318

The relativistic Hartree approach describing the bound states of both nucleons and anti-nucleons in finite nuclei has been extended to include tensor couplings for the $\omega$- and $\rho$-meson. After readjusting the parameters of the model to the properties of spherical nuclei, the effect of tensor-coupling terms rises the spin-orbit force by a factor of 2, while a large effective nucleon mass $m^{*}/M_{N} \approx 0.8$ sustains. The overall nucleon spectra of shell-model states are improved evidently. The predicted anti-nucleon spectra in the vacuum are deepened about 20 -- 30 MeV.

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