23 research outputs found
Spectral representations of the mass and polarisation operators at arbitrary temperatures
SOME PROBLEMS OF THE THEORY OF ELECTRON ENERGY SPECTRUM OF A DISORDERED SEMICONDUCTOR
The paper consists of two parts. In the first one we consider the localisation problem at d=2. Assertion of all states to be localised is shown to depend upon some dynamic properties of the system - contrary to the d=1 and d=3 cases where just the geometrical considerations are known to be sufficient. The second part contains an attempt to understand what is in fact measured when one studies light absorption by the spatially inhomogeneous films (of the a Si:H type)