07-26U

We propose a pseudospin model for proton glasses of the $Rb_{1 - x} (NH_4)_x H_2 PO_4$ type, which takes into account the energy levels of protons around the $PO_4 $ group, a long-range interactions between the hydrogen bonds, and an internal random deformational field. Within the framework of a cluster approximation and a mean field approximation over the long-range interactions, we derive a system of equations for the state parameters and static longitudinal and transverse permittivities. Within the Glauber dynamics approach, we obtain a qualitative description of the temperature behavior of dielectric permittivities of these compounds at different frequencies. We make a survey of experimental and theoretical studies of the properties of proton glass.