Bound states of interacting helium atoms

TL;DR

This paper investigates the potential for bound states of two interacting helium-4 atoms, revealing the existence of discrete energy levels and band structures similar to those in solid-state models.

Contribution

It demonstrates the theoretical possibility of bound states and band formations in helium-4 atom pairs for certain interaction potentials.

Findings

Existence of discrete energy levels for helium-4 atom pairs.

Presence of band structures analogous to the Kronig--Penney model.

Potential implications for understanding helium interactions.

Abstract

We study the possibility of existence of bound states for two interacting He-4 atoms. It is shown that for some potentials, there exist not only discrete levels but also bands akin to those in the Kronig--Penney model.