THE POLARON SELF-ENERGY IN A PARABOLIC QUANTUM-DOT

Polaronic states in a parabolic quantum dot are investigated by using the second order Rayleigh-Schrodinger perturbation theory. It is shown that the absolute values of the ground state energy correction and th e excited state energy correction as well as the relevant transition e nergies increase with decreasing the size of the quantum dot. The resu lts also indicate that the polaron effects in small quantum dots are s tronger than those in the corresponding bulk materials.