1995/04/25 by A. Galperin, E. Sokatchev
Physics and Astronomy · #Black Holes and Theoretical Physics #Cosmology and Gravitation Theories #Particle physics theoretical and experimental studies #hep-th
paper · pdf · doi:10.1088/0264-9381/13/2/004
published as Class.Quant.Grav. 13 (1996) 161-170 · 11 pages, Latex file
arxiv created 1995/04/25 · openalex publication_date 1996/02/01 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/30
Witten's linear sigma model for ADHM instantons possesses a natural (0, 4) supersymmetry. We study generalizations of the infrared limit of the model that are invariant under (4, 4) supersymmetry. In the case of four spacetime dimensions a background with a conformally flat metric and torsion is required. The geometry is specified by a single real scalar function satisfying Laplace's equation. It gives rise to 't Hooft instantons for the gauge group SU(2), instead of the general ADHM instantons for an SO(n) gauge group in the case (0, 4).