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 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 Ẽ1 theory.
Bibliographical noteFunding Information:
Acknowledgements This study was supported by the project OSYRIS (No. 12254 N) founded by the AIF and the Bundesminis-terium für Wirtschaft und Technologie.
- Brane Dynamics in Gauge Theories
- Solitons Monopoles and Instantons
- Supersymmetric gauge theory
ASJC Scopus subject areas
- Nuclear and High Energy Physics