nLab
effective action functional

Context

Algebraic Quantum Field Theory

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Concepts

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Theorems

States and observables

Operator algebra

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Local QFT

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Perturbative QFT

Contents

Idea

In the context of (perturbative) quantum field theory an effective action is an object obtained from a more fundamental (interaction) action functional by “averaging out” certain dependencies.

Details

References

A discussion (with an eye towards supersymmetric quantum field theory and Seiberg duality) is in section 2.1 of

  • Flip Tanedo, Notes on Seibergology (pdf)

Review includes

A review of effective actions in the background field formalism is in section 3.1 of

  • Darren Trevor Grasso, Higher order contributions to the effective action of 𝒩=2\mathcal{N} = 2 and 44 supersymmetric Yang-Mills theories from heat kernel techniques in superspace Thesis (2007) (web)

Last revised on February 8, 2018 at 15:10:48. See the history of this page for a list of all contributions to it.