出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：We review the D-formalism, a new method for determining the renormalization of Green functions
to all orders in perturbation theory. This formalism exploits the fact that the renormalized
Green functions may be calculated by displacing by an infinite amount the renormalized fields
and parameters of the theory with respect to the unrenormalized ones. We briefly discuss some of
its main characteristics, its conceptual and practical advantages, and some new results obtained
through it.
