BOSE–EINSTEIN CONDENSATION OF EXCITONS: PROMISE AND DISAPPOINTMENT
This chapter deals with Bose-Einstein condensation of excitons. After a historical survey of searching for Bose-Einstein condensation of excitons, the chapter focuses on long-lived indirect excitons in coupled quantum wells: Bose-Einstein condensation of noninteracting bosons in a two-dimensional parabolic trap is outlined, and the ground-state wavefunction of indirect excitons is discussed in detail. Recent theoretical results on the concentration-dependent blue shift and broadening of the photoluminescence line associated with indirect excitons are discussed.
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