Wick's theorem

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English[edit]

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Etymology[edit]

Named after Gian-Carlo Wick (1909–1992), Italian theoretical physicist.

Proper noun[edit]

Wick's theorem

  1. (quantum mechanics) A method of reducing high-order derivatives to a combinatorics problem, used extensively in quantum field theory to reduce arbitrary products of creation and annihilation operators to sums of products of pairs of these operators.