Comment on “Weakly bound states of the He-He-Ca triatomic system”

摘要

We discuss the computational results on the energetics and features of the bound states of one and two Henatoms attached to a Ca atom, which have been presented by Gou and Li in a recently published paper in Phys.nRev. A 85, 012510 (2012). We show that, given their choice for the interaction potential-energy surface, thenenergy they found for the three-particle complex’s ground state must be incorrect. We also point out that a largennumber of their excited states for the same system do not really exist since they are located above either of thentwo-atom components’ bound-state energies.