Publication Date
2017
Journal or Book Title
Journal of High Energy Physics
Abstract
We study the large N θ dependence and the η ′ potential in supersymmetric QCD with small soft SUSY-breaking terms. Known exact results in SUSY QCD are found to reflect a variety of expectations from large N perturbation theory, including the presence of branches and the behavior of theories with matter (both with N f ≪ N and N f ∼ N ). However, there are also striking departures from ordinary QCD and the conventional large N description: instanton effects, when under control, are not exponentially suppressed at large N , and branched structure in supersymmetric QCD is always associated with approximate discrete symmetries. We suggest that these differences motivate further study of large N QCD on the lattice.
DOI
https://doi.org/10.1007/JHEP05(2017)122
License
UMass Amherst Open Access Policy
Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 License.
Recommended Citation
Dine, Michael; Draper, Patrick; Stephenson-Haskins, Laurel; and Xu, Di, "θ and the η ′ in large N supersymmetric QCD" (2017). Journal of High Energy Physics. 1252.
https://doi.org/10.1007/JHEP05(2017)122