Identify the E6 simple lines as Wilson loops

Identify the multinomial ultraviolet line operators appearing in the $E_6$ trace-formula theories as explicit supersymmetric Wilson loops, or otherwise determine their precise ultraviolet realization, so that the corresponding infrared simple-line interpretation is established.

Background

For the E6E_6 examples, the algorithm finds candidate simple lines whose expressions include multinomial combinations of Wilson-loop monomials. The paper permits such multinomial descriptions when no monomial Wilson loop satisfies the required modular-data constraints.

However, the physical identification of these multinomial operators as genuine supersymmetric Wilson loops is not established. Resolving this issue would clarify how the ultraviolet line-operator description realizes the simple objects of the infrared TQFT.

References

Note that each $\L$ contains a multinomial for which we could not identify the simple line as a Wilson loop; see appendix \ref{app: A-model} for computations relevant to this.

— The Gaiotto-Kim Trace Formula and Line Defects  (2609.24582 - Kim et al., 21 Sep 2026) in Section 3, subsection “E6 theory,” paragraph “TFT[E6^(1,±)]”