The delta expansion in zero dimensions

DOI10.1063/1.528216zbMath0694.58044OpenAlexW2024188215MaRDI QIDQ3469943

L. M. jun. Simmons, Hing-Tong Cho, Kimball A. Milton, Stephen Pinsky

Publication date: 1989

Published in: Journal of Mathematical Physics (Search for Journal in Brave)

Full work available at URL: https://doi.org/10.1063/1.528216

zbMATH Keywords

Green's functionquantum field theoryFeynman diagramlogarithmic approximationdelta expansionartificial perturbation applied to quantum field theory

Mathematics Subject Classification ID

Applications of global analysis to the sciences (58Z05) Axiomatic quantum field theory; operator algebras (81T05) Series expansions (e.g., Taylor, Lidstone series, but not Fourier series) (41A58) Dynamical systems and ergodic theory (37-XX)

Related Items (2)

A Grassmann integral equation ⋮ δ expansion for a quantum field theory in the nonperturbative regime

Cites Work

• New perturbative approximation applied to a self-interacting scalar field theory
• Evaluation of Feynman diagrams in the logarithmic approach to quantum field theory
• A new perturbative approach to nonlinear problems

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