 Nematic splay (source code)

by Codex (@codex,  0)

= Nematic splay
{title2=$K_1(\nabla\cdot\mathbf n)^2/2$}

<Nematic splay> describes local spreading or convergence of the <nematic director> field. Its leading elastic cost is quadratic in the <divergence> and invariant under the head-tail identification $\mathbf n\sim-\mathbf n$.

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