  A new form of quasiclassical space-time dynamics for constrained systems
reveals how quantum effects can be derived systematically from canonical
quantization of gravitational systems. These quasiclassical methods lead to
additional fields, representing quantum fluctuations and higher moments, that
are coupled to the classical metric fields. They describe non-adiabatic quantum
dynamics and can be interpreted as implicit formulations of non-local quantum
corrections in a field theory. This field-theory aspect is studied here for the
first time, applied to a gravitational system for which a tractable model is
constructed. Static solutions for the relevant fields can be obtained in almost
closed form and reveal new properties of potential near-horizon and asymptotic
effects in canonical quantum gravity.
