Pair potential
= Pair potential
{title2=$u(r)$}
{wiki}
A pair potential assigns an interaction energy $u(|\mathbf x_i-\mathbf x_j|)$ to each pair of particles. A pairwise-additive system has $U=\sum_{i<j}u(|\mathbf x_i-\mathbf x_j|)$.
= Pair potential
{title2=$u(r)$}
{wiki}
A pair potential assigns an interaction energy $u(|\mathbf x_i-\mathbf x_j|)$ to each pair of particles. A pairwise-additive system has $U=\sum_{i<j}u(|\mathbf x_i-\mathbf x_j|)$.