Renormalized frequency shift of a Wannier exciton in a one-dimensional system
Abstract
Description
The radiative frequency shift of superradiant exciton in a one-dimensional system is calculated. It is shown that a finite frequency shift can be obtained after proper renormalization. The value of the shift is inversely proportional to the factor $\fracλ{d}$, where $λ$ is the wavelength of the emitted photon and $d$ is the lattice spacing.
4 pages, 1 figure, to appear in Phys. Letts. A (2004)
4 pages, 1 figure, to appear in Phys. Letts. A (2004)