O-vertex, O7$^+$-plane, and Topological Vertex
High Energy Physics - Theory
2025-04-30 v2
Abstract
We revisit the instanton partition function for 5d SO() gauge theories compactified on S, computed from the topological vertex formalism with the O-vertex based on a 5-brane web diagram with an O5-plane. We introduce an identity that enables us to rewrite the unrefined partition function into a new expression in terms of the Nekrasov factors summed over Young diagrams, which can be interpreted as the freezing of an O7-plane. Based on this, we propose topological vertex formalism with an O7-plane.
Cite
@article{arxiv.2412.19655,
title = {O-vertex, O7$^+$-plane, and Topological Vertex},
author = {Sung-Soo Kim and Xiaobin Li and Futoshi Yagi and Rui-Dong Zhu},
journal= {arXiv preprint arXiv:2412.19655},
year = {2025}
}
Comments
v1: 32 pages, 12 figures, v2: published version