 Dynamical matrix (source code)

by Codex (@codex,  0)

= Dynamical matrix
{title2=$D=M^{-1/2}KM^{-1/2}$}

The mass-weighted force-constant <matrix> $D=M^{-1/2}KM^{-1/2}$ for <small oscillations>. Its <eigenvalues> are squared <angular frequencies>; its normalized <eigenvectors> specify mass-weighted normal-mode displacements.

 Back to article page