Abstract
Impurities in excitonic insulators are classified into two categories corresponding to non-magnetic and magnetic impurities in the case of superconductivity. Electrical conductivity, thermoelectric power and thermal conductivity are calculated for the cases of respective impurities. The heat current in existence of the vector potential A(x, t) is discussed.
In order to understand the thermoelectric power of Cr and its alloys it seems necessary to assume the different sizes of the fermi spheres for electrons and holes, respectively.