We study the polariton relaxation dynamics for different scatteringmechanisms as: Phonon and electron scattering procesess. The relaxationpolariton is obtained at very short times by solving the Boltzman equation.Instead of the well-known relaxation process by phonons, we show that thebottleneck effect relaxes to the ground state more efficiently at low pumppower intensity when the electron relaxation process is included. In this way,we clearly demonstrate that different relaxation times exist, for which any ofthese two mechanism is more efficient to relax the polariton population to theground state.
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