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Lambda: A Mathematica package for operator product expansions in vertex algebras

Joel Ekstrand
Journal / Anthology

Computer Physics Communications
Year: 2011
Volume: 182
Issue: 2
Page range: 409-413

We give an introduction to the Mathematica package Lambda, designed for calculating λ-brackets in both vertex algebras, and in SUSY vertex algebras. This is equivalent to calculating operator product expansions in two-dimensional conformal field theory. The syntax of λ-brackets is reviewed, and some simple examples are shown, both in component notation, and in N = 1 superfield notation.


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