New Local Symmetry for Qed
نویسنده
چکیده
A new local, covariant and nilpotent symmetry is shown to exist for the interacting BRST invariant U(1) gauge theory in two dimensions of spacetime. Under this new symmetry , it is the gauge-fixing term that remains invariant and the corresponding transformations on the Dirac fields turn out to be the analogue of chiral transformations. Possible interpretation and implication of this symmetry are pointed out in the context of BRST cohomology and Hodge decomposition theorem.
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