However, traditional electrochemistry concepts based on classical electrode materials and their two-phase interfaces face challenge when applied to 3PB. Thus, the decay of a discrete 3PB state embedded in a tight-binding 3PB continuum is possible using ground state conditions where probability measures are supported on configurations with minimal energy (i.e. zero-temperature limit). The energy band model for the density of states ρ(ω) and 3PB spectral function G(ω) is given by the nonlinear Fano-Anderson model: