Vacuum in homogeneous gravitational field and excitation of uniformly accelerated detector

The theory of quantum effects in a uniformly accelerated systems of reference and in a homogeneous gravitational field is discussed. The ways of description of excitation and emission processes of a uniformly accelerated detector in the uniformly accelerated and internal systems of reference are compared. Special attention is paid to discussion of the equivalence principle for quantum phenomena in connection with the problem concerning excitation of the uniformly accelerated detector and the one resting in the homogeneous gravitational field