Covariant perturbation theory and chiral superpropagators
Abstract
We use a covariant formulation of perturbation theory for the non-linear chiral invariant pion model to define chiral superpropagators leading to S matrix elements which are independent of the choice of the pion field coordinates. The relation to the standard definition of chiral superpropagators is discussed.
- Publication:
-
Physics Letters B
- Pub Date:
- November 1972
- DOI:
- 10.1016/0370-2693(72)90074-3
- Bibcode:
- 1972PhLB...42..253E