Ground-state path integral Monte Carlo simulations of positive ions in ${}^4$He clusters: bubbles or snowballs?

Stefano Paolini, Francesco Ancilotto, Flavio Toigo

The local order around alkali (Li${}^{+}$ and Na${}^{+}$) and alkaline-eath (Be${}^{+}$, Mg${}^{+}$ and Ca${}^{+}$) ions in ${}^4$He clusters has been studied using ground-state path integral Monte Carl…