25 lines
593 B
Text
25 lines
593 B
Text
/-
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Copyright (c) 2024 Joseph Tooby-Smith. All rights reserved.
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Released under Apache 2.0 license as described in the file LICENSE.
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Authors: Joseph Tooby-Smith
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-/
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import HepLean.PerturbationTheory.FeynmanDiagrams.Basic
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import HepLean.Meta.Informal
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/-!
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# Wick contraction in position space
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Every complete Wick contraction leads to a function on positions, following
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the Feynman rules.
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## Further reading
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The following reference provides a good resource for Wick contractions of external fields.
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- http://www.dylanjtemples.com:82/solutions/QFT_Solution_I-6.pdf
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-/
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namespace Wick
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end Wick
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