Reflection states in Ding-Iohara-Miki algebra and brane-web for D-type quiver

TL;DR

This paper introduces reflection states in the Ding-Iohara-Miki algebra and connects them to brane-web diagrams, enabling the engineering of D-type quiver gauge theories and reproducing Nekrasov partition functions.

Contribution

It extends the DIM algebra framework by incorporating reflection states, linking algebraic intertwiners with string theory orientifolds and D-type quiver gauge theories.

Findings

Reflection states in DIM algebra are introduced.

Vertical reflection states correspond to orientifold planes.

Nekrasov partition functions are reproduced from intertwiners.

Abstract

Reflection states are introduced in the vertical and horizontal modules of the Ding-Iohara-Miki (DIM) algebra (quantum toroidal $\mathfrak{gl}_1$). Webs of DIM representations are in correspondence with $(p,q)$-web diagrams of type IIB string theory, under the identification of the algebraic intertwiner of Awata, Feigin and Shiraishi with the refined topological vertex. Extending the correspondence to the vertical reflection states, it is possible to engineer the $\mathcal{N}=1$ quiver gauge theory of D-type (with unitary gauge groups). In this way, the Nekrasov instanton partition function is reproduced from the evaluation of expectation values of intertwiners. This computation leads to the identification of the vertical reflection state with the orientifold plane of string theory. We also provide a translation of this construction in the Iqbal-Kozcaz-Vafa refined topological vertex formalism.