Indefinite-Metric Quantum Field Theory of General Relativity. XI ---Structure of Spontaneous Breakdown of the Superalgebra---
It is discussed how to derive the identities of the Ward-Takahashi type corresponding to spontaneously broken symmetries in the manifestly-covariant canonical formalism of quantum gravity. Based on the sixteen-dimensional Poincaré-like superalgebra, it is found that various consistency conditions are derived for the space-time integrals of certain special vacuum expectation values of operator T-products. It is also found that a relation holds for the wave-function renormalization constants.