Harmonic Superspace for Ali-Ilahi's ADHM Instanton Sigma Model
Abstract
ADHM Yang-Mills instantons are extended field theoretical objects. These are more general than the more familiar 't Hooft Yang-Mills instantons. Their counter parts exist in string theory in terms of sigma models. Nearly three decades ago Witten constructed a (0,4) supersymmetric linear sigma model incorporating ADHM instantons. Witten's construction was in component form. Galperin and Sokatchev constructed the corresponding off-shell supersymmetric version using the harmonic superspace. Recently Ali and Ilahi constructed an ADHM instanton linear sigma model that is complementary, in the sense of being dual, to the original model constructed by Witten. Full (0,4) supersymmetric off-shell harmonic superspace formalism for Ali-Ilahi's complementary ADHM instanton sigma model is developed in this note.
Keywords
Cite
@article{arxiv.2507.22948,
title = {Harmonic Superspace for Ali-Ilahi's ADHM Instanton Sigma Model},
author = {Abbas Ali and Mohsin Ilahi and P. P. Abdul Salih and Shafeeq Rahman Thottoli},
journal= {arXiv preprint arXiv:2507.22948},
year = {2025}
}
Comments
LaTeX, 94 pages, summary has already appeared as 2507.11305