On-shell expansion of the effective action:Smatrix and the ambiguity-free stability criterion
- 15 December 1988
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review D
- Vol. 38 (12), 3747-3754
- https://doi.org/10.1103/physrevd.38.3747
Abstract
The expansion formula of the effective action in terms of the connected S-matrix elements is derived. They are expressed in terms of the on-shell quantities. The correct stability criterion of the given solution is discussed. It is free from any ambiguities which are the subjects of recent controversy.Keywords
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