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.
(figuratively) Trying to achieve a particular task, often with difficulty. / (figuratively) Lost. / (figuratively) Having lost one's mind; insane.
Initialism of credit note. / construction number (aircraft construction).
plural of polar
ウィックの定理は、任意の生成・消滅演算子の積を対の積の和に還元する手法であり、場の演算子の時間順序積を縮約の和として表現できるため、量子場理論における摂動計算を大幅に簡素化します。
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