The localized end-point polariton states

One of the unsolved problems arising in the framework of the macroscopic approach is the nature of the lowest energy local states in the microcavity with disordered organics. The nature of states which formally appear in the region of molecular resonance are clear they do not interact with the cavity photon and for this reason are similar to states in non-cavity organic material. However, the nature of cavity polaritons near the lowest end-points deserves careful 

it follows from this expression that the amplitude of the wavepacket depends only on — rj, moves with group velocity and is a correct 

Just such a situation takes place for microcavity dispersion at the bottom of the lower and upper polariton branches in a microcavity with a = h/2M where M is the effective mass of the cavity polariton. Of course, specific features of the low-energy wavepackets stem from the fact that the polariton dispersion near the 

It is convenient to choose the weight amplitude function A(k) Gaussian A(k) = 

Equation (10.46) describes a Gaussian-shaped wavepacket in 2D whose center 

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