Scalar field with higher-derivative term: Path-integral quantization, examples of scattering amplitudes, and discussion of unitarity, stability and causality.
Introduction to Quantum Gravity. Canonical formalism of Einstein gravity. DeWitt metric. Arnowit-Deser-Misner constraints analysis. Physical interpretation of constrains. Quantization. Wheeler-DeWitt equation. Wave function of the Universe. Minisuperspace. Conceptual issues.
