Dimensional renormalization and the action principle
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- Breitenlohner, P. & Maison, D. Commun.Math. Phys. (1977) 52: 11. doi:10.1007/BF01609069
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Dimensional renormalization is defined in such a way that the renormalized action principle holds. It is shown that this leads to a minimal, additive renormalization. The derivation of Ward-Takahashi indentities and Callan-Symanzik equations from the action principle is exemplified.