Dynamic structure factor
= Dynamic structure factor
{title2=$S(\omega,\mathbf k)$}
{wiki}
The <dynamic structure factor> is the space-time <Fourier transform> of an equilibrium <two-point correlation function>. It resolves fluctuations by <angular frequency> and <wavevector> and is related to the dissipative part of a <retarded Green function> by the <fluctuation-dissipation theorem>.