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Perturbative Expansion in the \( \phi ^4_4\) Model

  • Henryk Arodź
  • Leszek Hadasz
Chapter
Part of the Graduate Texts in Physics book series (GTP)

Abstract

Problems with an exact construction of the quantum \(\phi ^4_4\) model. The interaction picture. The Gell-Mann–Low formula for Greeen’s functions. The generating functional for Green’s functions. The exponential Wick formula. The Feynman free propagator. Regularized Feynman diagrams in four-momentum space. Normal ordered interactions. Cancelation of vacuum bubbles.

Copyright information

© Springer International Publishing AG 2017

Authors and Affiliations

  1. 1.Institute of PhysicsJagiellonian UniversityKrakówPoland

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