Square shoulder model page on SklogWiki - a wiki for statistical mechanics and thermodynamics

The square shoulder model is given by ^[1]

\Phi _{12}\left(r\right)=\left\{{\begin{array}{ccc}\infty &;&r<\sigma \\\epsilon &;&\sigma \leq r<\lambda \sigma \\0&;&r\geq \lambda \sigma \end{array}}\right.

where $\Phi _{12}(r)$ is the intermolecular pair potential, $\epsilon$ is the height of the shoulder, $r$ is the distance between site 1 and site 2 Failed to parse (SVG (MathML can be enabled via browser plugin): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle r := |\mathbf{r}_1 - \mathbf{r}_2|} , σ is the hard diameter and λ > 1.