On the Hopf algebraic origin of Wick normal ordering
- 19 December 2000
- journal article
- Published by IOP Publishing in Journal of Physics A: General Physics
- Vol. 34 (1), 105-115
- https://doi.org/10.1088/0305-4470/34/1/308
Abstract
A combinatorial formula of Rota and Stein is taken to perform Wick reordering in quantum field theory. Wick's theorem becomes a Hopf algebraic identity called Cliffordization. The combinatorial method relying on Hopf algebras is highly efficient in computations and yields closed algebraic expressions.Keywords
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