English

Exact results on the Bethe Ansatz evaluation of the SCI

High Energy Physics - Theory 2025-06-19 v1

Abstract

We evaluate the superconformal index using the Bethe Ansatz (BA) approach for 4d N=1\mathcal{N}=1 toric quiver gauge theories with a small amount of gauge groups. We restrict to SU(2)\mathrm{SU}(2) gauge factors and compare the results with the ones obtained by a direct evaluation of the index. The answer obtained from the BA approach using only discrete solutions for the BA equations does not always reproduce the direct evaluation result. A similar problem affects the case of SU(N)\mathrm{SU}(N) N=4\mathcal{N}=4 SYM for N3N \geq 3, and it requires to introduce continuous solutions to the BA equations. However, we find that for T1,1T^{1,1} and partially for the suspended pinch point the matching is exact in absence of the contributions from continuous solutions.

Keywords

Cite

@article{arxiv.2506.15296,
  title  = {Exact results on the Bethe Ansatz evaluation of the SCI},
  author = {Antonio Amariti and Pietro Glorioso},
  journal= {arXiv preprint arXiv:2506.15296},
  year   = {2025}
}

Comments

29 pages, 2 figures