Relaxation Theory Applied to Scattering of Excitations and Optical Transitions in Crystals and Solids

摘要: In this chapter, we will discuss the application of standard quantum relaxation theory to problems excitation transport and scattering in molecular solids dephasing optical transitions glasses, all at low temperatures. next section, review based on weak coupling approximation (Redfield theory), apply a number simple microscopic models dynamics temperature dependence various processes. third section these ideas study delocalized excitations low-temperature solids, including effects impurities order. We compare our theoretical results experimental Schmidt (this volume). fourth homogeneous line shapes localized crystals presenting dynamical used phenomenon. The many describe transition are compared it is shown how derive from Redfield theory. Unfortunately, because parameters unknown, not yet possible decide which correct model. This discussed detail Section 4.