https://physicsoverflow.org/36614/why-are-boundary-terms-important-in-chern-simons-theory
Why are boundary terms important in Chern-Simons theory? | PhysicsOverflow
I am learning about Chern-Simons theory. I work in Euclidean space. The action is given by $$ ... ignored boundary terms. Why are they important now?
chern simons theoryboundary termsimportantphysicsoverflow