Topological $q$-expansion and the supersymmetric sigma model

Understand

The Hamiltonian and Lagrangian formalisms offer two perspectives on quantum field theory.

• This paper sets up a framework to compare these approaches for the supersymmetric sigma model.
• The goal is to use techniques from physics to construct topological invariants.
• In brief, the Hamiltonian formalism studies positive energy representations of super annuli.