Tuesday, June 18, 2013

1306.3661 (G. Hagen et al.)

Efimov Physics around the neutron rich Calcium-60 isotope    [PDF]

G. Hagen, P. Hagen, H. -W. Hammer, L. Platter
We calculate the neutron-Calcium-60 S-wave scattering phase shifts using state of the art coupled-cluster theory combined with modern ab initio interactions derived from chiral effective theory. Effects of three-nucleon forces are included schematically as density dependent nucleon-nucleon interactions. This information is combined with halo effective field theory in order to investigate the Calcium-60-neutron-neutron system. We predict correlations between different three-body observables and the two-neutron separation energy of Calcium-62. This provides evidence of Efimov physics along the Calcium isotope chain. Experimental key observables that facilitate a test of our findings are discussed.
View original: http://arxiv.org/abs/1306.3661

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