Figure 1

The quiver diagram that leads to the Fayet model. The first, square, node corresponds to a $USp(r_1)$ group, while the circular nodes correspond to $U(r_i)$ groups. For our application we need to have $r_2=r_3=1$, and $r_1=0$ (this is the node wrapped by the D-instanton); the bifundamentals connecting node 1 and node 2 are then Ganor strings.Reuse & Permissions

Figure 2

The quiver gauge theories of the orbifolded conifold and of its orientifold for $n=3$. The circular nodes have $U(r_i)$ gauge groups, and the square nodes have $USp(r_i)$ groups. More generally there are $2n$ nodes before orientifolding and $n+1$ nodes after orientifolding.Reuse & Permissions

Figure 3

The T-dual type IIA brane configuration for our Fayet model when it is embedded in the $n=3$ orientifold. NS branes stretch in the 012345 directions, ${\mathrm{NS}}^{\prime }$ branes in the 012389 directions, and D4 branes stretch in the 01236 directions. The O6 planes extend along the 01237 directions, and lie at a 45 ° angle with respect to the 45 and 89 planes. The $x^6$ direction is compact and becomes an interval after the orientifolding.Reuse & Permissions

Figure 4

The two-node quiver which gives rise directly to a Polonyi model, after considering the instanton wrapping symplectic node 1. The arrow from node 2 to itself is a chiral superfield in the adjoint representation of $U(r_2)$.Reuse & Permissions

Figure 5

A quiver leading to an O’Raifeartaigh model.Reuse & Permissions

Figure 6

A quiver with a coupling to the standard model at node 4 and symplectic nodes (with stringy D-instantons) at nodes 1 and 5.Reuse & Permissions