Quiver diagram

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In theoretical physics, a quiver diagram is a graph representing the matter content of a gauge theory that describes D-branes on orbifolds. Quiver diagrams may also be used to described ${\displaystyle {\mathcal {N}}=2}$ supersymmetric gauge theories in four dimensions.

Each node of the graph corresponds to a factor U(N) of the gauge group, and each link represents a field in the bifundamental representation

${\displaystyle (M,{\bar {N}})}$.

The relevance of quiver diagrams for string theory was pointed out and studied by Michael Douglas and Greg Moore.^[1]

While string theorists use the words quiver diagram, many of their colleagues in particle physics call these diagrams mooses.