Few-body systems

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In quantum mechanics and classical mechanics, a few-body system consists of a small number of well-defined structures.

Examples of few-body problems include light nuclear systems (that is, few-nucleon bound and scattering states), small molecules, light atoms (such as helium in an external electric field), and quantum dots. Three-body systems can be solved exactly through the Faddeev equation.

In classical mechanics, the few-body problem is a subset of the N-body problem.

One notable journal covering this field is Few-body Systems.

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