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Wick's theorem. In DICTIOUS you will not only get to know all the dictionary meanings for the word
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English
Etymology
Named after Gian-Carlo Wick (1909–1992), Italian theoretical physicist.
Proper noun
Wick's theorem
- (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.