Formulation of Nonlocal Response Theory
Since we intend to describe mesoscopic systems as in the atomic case, maintaining full quantum mechanical coherence, we must carry out a microscopic treatment of both the matter and the EM field. In contrast to the prevailing optical response theory of condensed matter, where the details of the quantum mechanical motion of matter and the microscopic variation of the EM field are smeared out, we keep those details required from first principles.
KeywordsNonlinear Response Susceptibility Function Fourier Component Induce Polarization Incident Field
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