Lattice calculation of the Sn isotopes near the proton dripline
Abstract
We present the first ab initio lattice calculations of the proton-rich tin isotopes 99Sn to 102Sn using nuclear lattice effective field theory with high-fidelity two- and three-nucleon forces. For a given set of three-nucleon couplings, we reproduce binding energies with 1\% accuracy for the even-even systems, and obtain energy splitting and two-nucleon separation energies in agreement with experiment. Our results confirm the N=50 shell closure and reveal that the binding energy of 99Sn lies below values extrapolated from heavier isotopes.
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