Coherence properties of thermally stimulated fields of solids
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Various definitions of spatial and temporal correlative properties of spontaneous steady-state classical and quantum processes are considered and the key properties of the processes are described. A relation of correlative properties of thermally stimulated fields with the frequency dependence of the dielectric function is demonstrated. A dependence of the correlative properties of the thermally stimulated fields in the near-field regime on the distance from a solid surface is presented. It is demonstrated that the characteristic spatial and temporal scales of the evanescent part of the thermally stimulated field are unambiguously determined by the specific properties of the dispersion relation of surface polaritons.
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