Extended Data Fig. 3: Dependences of the rest interaction contribution on the cutoff parameter of the V_lowk approach.

Cutoff dependences of the ground-state expectation value of the rest (such as quadrupole) term of the effective NN interaction originating in the χEFT NN forces by Entem and Machleidt^22,53 (Methods) are shown for the Ne and Mg isotopes. a, Ne; b, Mg. For each isotope, the orange, red and grey lines depict, respectively, this quantity obtained with the cutoff parameter Λ_Vlowk = 1.8 fm⁻¹, 2.0 fm⁻¹ and 2.2 fm⁻¹ by the second-order \(\hat{Q}\)-box calculation in the EKK process. For comparison, the third-order \(\hat{Q}\)-box result with Λ_Vlowk = 2.0 fm⁻¹ is shown by the green line. All values are shown relative to their corresponding N = 16 values. The dripline isotopes suggested by the present work are indicated by star symbols.