GoContactPotential #

Go-Contact potential is a kind of 10-12 Lennard Jones potential.

\[U(r) = k\left[5\left(\frac{r_0}{r}\right)^{12} - 6\left(\frac{r_0}{r}\right)^{10}\right]\]

It is mainly used in a structure-based Coarse-Grained models to represent attractive pairs of particles.

Example #

[[forcefields.local]]
interaction = "Contact"
potential   = "GoContact"
topology    = "contact"
parameters = [
    {indices = [0, 1], v0 = 1.0, k = 0.1},
    # ...
]

Input Reference #

v0: Floating
- The native distance. \( r_0 \) in the above equation.
k: Floating
- The strength of the potential.
indices: Array of Integers (length = 2)
- Indices of particles that interact with each other. The index is 0-based.
offset: Integer(Optional. By default, 0.)
- Offset of index.