Isn't that part of the definition a Lennard-Jones potential: that
the zero-point of the interaction energy is defined at infinite
separation? It seems to me that your calculation is simply
giving you back your model's boundary condition.
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| ___ _ | henne at u.washington.edu |
| (/__) _ _ _ / (/_/ _ _ _ _ | Randy Henne |
| / ) (_\ / ) (_/ (_) / / (- / ) / ) (- | Molecular Bioengineering |
| ) | University of Washington |
