Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2011-08-08
J. Phys. A: Math. Theor. 45 (2012) 085203
Physics
High Energy Physics
High Energy Physics - Theory
29 pages
Scientific paper
10.1088/1751-8113/45/8/085203
We provide a general construction procedure for antilinearly invariant complex root spaces. The proposed method is generic and may be applied to any Weyl group allowing to take any element of the group as a starting point for the construction. Worked out examples for several specific Weyl groups are presented, focusing especially on those cases for which no solutions were found previously. When applied in the defining relations of models based on root systems this usually leads to non-Hermitian models, which are nonetheless physically viable in a self-consistent sense as they are antilinearly invariant by construction. We discuss new types of Calogero models based on these complex roots. In addition we propose an alternative construction leading to q-deformed roots. We employ the latter type of roots to formulate a new version of affine Toda field theories based on non-simply laced roots systems. These models exhibit on the classical level a strong-weak duality in the coupling constant equivalent to a Lie algebraic duality, which is known for the quantum version of the undeformed case.
Fring Andreas
Smith Monique
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