04-07U

Using dynamical mean field theory pseudospin-electron model in the case of alloy analogy approximation was investigated. Energetic spectrum of two near subbands with equal projections of pseuodospin interaction was found using equations of motions method. The behavior of chemical potential calculated in this case. Influence of model parameters on appearance of spectrum gap was investigated. Influence of external field $h$ and tunnelling splitting $\Omega $ on effective potential (ratio $\frac {U}{W}$ of appearing gap in spectrum).