= Dynamic structure factor
{wiki=Dynamic_structure_factor}
The dynamic structure factor (DSF) is a key concept in condensed matter physics, particularly in studies of materials and collective excitations such as phonons, magnons, and other quasiparticles. It provides information about the microscopic dynamics of a system, including how density fluctuations evolve over time. Mathematically, the dynamic structure factor \\( S(\\mathbf\{q\}, \\omega) \\) is defined in terms of the Fourier transform of the time-dependent density-density correlation function.
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