Relativistic mean-field description of light $Λ$ hypernuclei with large neutron excess

Details Relativistic mean-field description of light $Λ$ hypernuclei with large neutron excess Relativistic mean-field description of light $Λ$ hypernuclei with large neutron excess

1997-09-23

arxiv.org/abs/nucl-th/9709046v1

Phys.Rev.C57:1060-1063,1998

Physics

Nuclear Physics

Nuclear Theory

8 pages, LATEX, 2 p.s. figures, submitted to Phys. Rev. C as a R.C

Scientific paper

10.1103/PhysRevC.57.1060

The Relativistic Hartree Bogoliubov model in coordinate space, with finite range pairing interaction, is applied to the description of $\Lambda$-hypernuclei with a large neutron excess. The addition of the $\Lambda$ hyperon to Ne isotopes with neutron halo can shift the neutron drip by stabilizing an otherwise unbound core nucleus. The additional binding of the halo neutrons to the core originates from the increase in magnitude of the spin-orbit term. Although the $\Lambda$ produces only a fractional change in the central mean-field potential, through a purely relativistic effect it increases the spin-orbit term which binds the outermost neutrons.

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