W_∞ coherent states and path-integral derivation of bosonization of non-relativistic fermions in one dimension

Abstract

We complete the proof of bosonization of non-interacting non-relativistic fermions in one space dimension by deriving the bosonized action using W_∞ coherent states in the fermion path-integral. This action was earlier derived by us using the method of co-adjoint orbits. We also discuss the classical limit of the bosonized theory and indicate the precise nature of the truncation of the full theory that leads to the collective field theory.