5-brane webs, symmetry enhancement, and duality in 5d supersymmetric gauge theory

Journal of High Energy Physics, Mar 2014

We present a number of investigations of 5d $\mathcal{N}$ = 1 supersymmetric gauge theories that make use of 5-brane web constructions and the 5d superconformal index. These include an observation of enhanced global symmetry in the 5d fixed point theory corresponding to SU(N) gauge theory with Chern-Simons level ±N , enhanced global symmetries in quiver theories, and dualities between quiver theories and non-quiver theories. Instanton contributions play a crucial role throughout.

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Oren Bergman, Diego Rodríguez-Gómez, Gabi Zafrir. 5-brane webs, symmetry enhancement, and duality in 5d supersymmetric gauge theory, Journal of High Energy Physics, 2014, 112, DOI: 10.1007/JHEP03(2014)112