Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2001-07-18
J.Phys.A34:8631-8658,2001
Physics
High Energy Physics
High Energy Physics - Theory
36 pages, no figures; version 2: 3 footnotes and 3 references added
Scientific paper
10.1088/0305-4470/34/41/317
We generate by computer a basis of invariants for the fundamental representations of the exceptional Lie groups E(6) and E(7), up to degree 18. We discuss the relevance of this calculation for the study of supersymmetric gauge theories, and revisit the self-dual exceptional models. We study the chiral ring of G(2) to degree 13, as well as a few classical groups. The homological dimension of a ring is a natural estimator of its complexity and provides a guideline for identifying theories that have a good chance to be amenable to a solution.
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