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open source force-matching

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potential_models

# Potential models

potfit supports two very different ways of defining a potential. Both ways use some parameters $\alpha_i$ to define a potential, but they have very different meanings.

There are tabulated potentials and analytic potentials. The main differences are given in the table below.

tabulated potential analytic potential
• Many parameters
• Local parameters
• arbitrary functions
• few parameters
• global parameters
• physical meaning