Insertion and Elimination Lie Algebra: the Ladder case
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hep-thmath-phmath.MP
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algebracaseladderrepresentationsomeaspectscertaindimensional
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We prove that insertion-elimination Lie algebra of Feynman graphs, in the ladder case, has a natural interpretation in terms of a certain algebra of infinite dimensional matrices. We study some aspects of its representation theory and we discuss some relations with the representation of the Heisenberg algebra
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