Phys. Rev. D 38, 723–724 (1988)An improved presentation of a novel perturbative scheme in field theoryReceived 18 March 1988; published in the issue dated 15 July 1988 Bender et al. have recently proposed a novel perturbative scheme to analyze self-interacting scalar field theories. Calculations, however, require the use of complicated polynomial interactions for which no general expression has been found. The answers obtained have then to be acted on by a complex differential operator. We propose an alternative approach involving an interaction Lagrangian of only two terms, which presents the whole scheme in a simple way, as well as having some calculational advantage. © 1988 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevD.38.723
DOI:
10.1103/PhysRevD.38.723
PACS:
11.10.Ef, 11.10.Gh, 11.10.Lm, 11.15.Tk
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