Abstract
We show how to systematically derive the rules for bosonization in two dimensions as a particular case of a duality transformation. The duality process amounts to gauging the global symmetry of the original (fermionic) theory, and constraining the corresponding field strength F μν to vanish. Integration over the Lagrange multiplier, Λ, for this constraint then reproduces the original theory, and integration over the gauge fields generates the dual theory with Λ as the new (bosonized) variable. We work through the bosonization of the Dirac fermion, the massive and massless Thirring models, and a fermion on a cylindrical spacetime as illustrative examples.
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