Insertion and Elimination Lie Algebra: the Ladder case
arXiv:math/0308042 · doi:10.1023/B:MATH.0000027749.09118.a5
Abstract
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
LaTex, 17 pages, typos corrected, to appear in LMP