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.. _electrodynamics:
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Classical electrodynamics
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GPAW can perform classical electrodynamics simulations using quasistatic finite-difference time-domain (QSFDTD) method.
In these calculations you must specify the regions with classically polarizable material, as well as their permittivities
`\epsilon(\mathbf{r}, \omega)`.
The electric field and the polarization charge density are propagated in time under an influence of external perturbation.
The QSFDTD method can be also merged with time-propagation simulation, which yields a hybrid multiscale method.
.. toctree::
:maxdepth: 2
qsfdtd
hybridscheme
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