Tensor-force effects on the deviation of the neutron-proton system to the unitary limit. (IMAGE)

Science China Press

Tensor-force effects on the deviation of the neutron-proton system to the unitary limit.

Caption

(a) The dimensionless ratio of the effective range rt  to the scattering length at  in spin triplet (left axis) and the binding energy for the deuteron Bd  (right axis) with variation of the tensor force quenching factor λ . The upper (lower) horizontal dashed line denotes the locale of the unitary (bound) limit. (b) The ground-state energy per particle for SNM calculated with Bonn A, B, and C, where the scattering length at in spin-triplet channel is tuned to −100 fm. Only contributions from the 3S1-3D1 channel are considered. The results of a free Fermi gas with a scaling factor 0.38 is also displayed for comparison.

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