Many Polaron Interaction Effects in Two Dimensions

摘要

Quasiparticle properties (e.g., effective mass, density of states, and inelastic lifetime) are calculated for a polar two-dimensional electron gas, taking into account both the Coulomb and the Froehlich interaction in the weak coupling limit. The resultant many-polaron self-energy differs significantly from the one polaron result, and shows interesting and observable many body structure in the density of states. Electron electron and electron phonon interactions are found not to be multiplicative in such a coupled system. Reprints. (JHD)