More on 5d descriptions of 6d SCFTs

We propose new five-dimensional gauge theory descriptions of six-dimensional N = (1,0) superconformal field theories arising from type IIA brane configurations includ-ing an ON 0-plane. The new five-dimensional gauge theories may have SO, Sp, and SU gauge groups and further broaden the landscape of ultraviolet complete five-dimensional N = 1 supersymmetric gauge theories. When we include an O8−-plane in addition to an ON 0-plane, T-duality yields two O7−-planes at the intersections of an ON 0-plane and two O50-planes. We propose a novel resolution of the O7−-plane with four D7-branes in such a configuration, which enables us to obtain three different types of five-dimensional gauge theories, depending on whether we resolve either none or one or two O7−-planes. Such different possibilities yield a new five-dimensional duality between a D-type SU quiver and an SO − Sp quiver theories. We also claim that a twisted circle compactification of a six-dimensional superconformal field theory may lead to a five-dimensional gauge theory different from those obtained through a simple circle compactification.