  Bosonic quantum field theories with holomorphic action functionals are
realized by two types of constructions involving supersymmetric quantum field
theories, compactified on an interval in one type and compactified on a disk
and deformed in the other. We establish the equivalence between the two types
of constructions by reducing the disk to the interval and the interval to a
point. As examples, we discuss constructions of zero-dimensional gauged sigma
model, gauged quantum mechanics, gauged symplectic bosons in two dimensions,
and Chern-Simons theory and its higher-dimensional variants.
