Lattice calculation of the Sn isotopes near the proton dripline
Fabian Hildenbrand, Serdar Elhatisari, Ulf-G. Meißner, Helen Meyer, Zhengxue Ren, Andreas Herten, Mathis Bode
公開日: 2025/9/10
Abstract
We present the first $\textit{ab initio}$ lattice calculations of the proton-rich tin isotopes $^{99}$Sn to $^{102}$Sn 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 $\sim 1\%$ 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 $^{99}$Sn lies below values extrapolated from heavier isotopes.