1992/07/09 by Neil Marcus · 4 citations
Physics and Astronomy · #Black Holes and Theoretical Physics #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-th
paper · pdf · doi:10.1016/0550-3213(92)90161-4
published as Nucl.Phys.B387:263-279,1992 · 17 Pages (LaTeX)
arxiv created 1992/07/09 · openalex publication_date 1992/11/01 · arxiv updated 2010/11/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
We show that the N=2 open string describes a theory of self-dual Yang Mills (SDYM) in (2,2) dimensions. The coupling to the closed sector is described by SDYM in a Kahler background, with the Yang-Mills fields providing a source term to the self-duality equation in the gravity sector. The four-point S-matrix elements of the theory vanish, so the tree-level unitarity constraints leading to the Chan-Paton construction are relaxed. By considering more general group-theory ansatze the N=2 string can be written for any gauge group, and not just the classical groups allowed for the bosonic and N=1 strings. Such ad hoc group-theory factors can not be appended to the closed N=2 string, explaining why the Zn closed N=2 strings are trivial extensions of the Z1 theory.