Abstract
In this article, we study four-body repulsive van der Waals interactions. Specifically, we study the repulsive potential peaks as a function of the principal quantum number n. It is discovered that the repulsive potential peak’s height increases as the energy difference between the two coupling states increases. This study is beneficial for achieving tunable atom–atom interactions, quantum tunneling, precision measurement, ultracold plasma, as well as quantum computing. For example, if we would like to study quantum tunneling, it is imperative to know the potential height or the potential peak’s height. This article provides a hint on how to achieve a potential peak with a particular height.
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