Abstract
5d Yang-Mills theory with an Sp(N) gauge group admits a discrete analog of the θ parameter. We describe the origin of this parameter in \( \mathcal{N} \) = 1 theories from Type I’ string theory, and study its effect on the 5d superconformal fixed point theories with an Sp(1) = SU(2) gauge group by computing the superconformal index. Our result confirms the lack of global symmetry enhancement in the so-called \( {{\widetilde{E}}_1} \) theory.
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ArXiv ePrint: 1310.2150
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Bergman, O., Rodríguez-Gómez, D. & Zafrir, G. Discrete θ and the 5d superconformal index. J. High Energ. Phys. 2014, 79 (2014). https://doi.org/10.1007/JHEP01(2014)079
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DOI: https://doi.org/10.1007/JHEP01(2014)079