2000/02/29 by Laur Järv, Laur Jarv, Clifford V. Johnson
Mathematics · Physics and Astronomy · #Black Holes and Theoretical Physics #Computer science #Discrete mathematics #Mathematics #hep-th
paper · pdf · doi:10.1103/physrevd.62.126010
published as Phys.Rev. D62 (2000) 126010 · 26 pages, 2 figures (v2: references added)
arxiv created 2000/03/02 · openalex publication_date 2000/11/27 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
Supergravity solutions related to large NSU(N) pure gauge theories with eight supercharges have recently been shown to give rise to an ``enhan\ifmmode \mbox\cc\else \cc\fion,'' a new type of hypersurface made of D-branes. We show that enhan\ifmmode \mbox\cc\else \cc\fions also arise in similar situations pertaining to SO(2N+1), USp(2N) and SO(2N) gauge theories, using orientifolds. Enhan\ifmmode \mbox\cc\else \cc\fions therefore appear to come in types A, B, C, and D. The latter three differ globally from type A by having an extra Z2 identification, and are distinguished locally by their subleading behavior in large N. We focus mainly on (2+1)-dimensional gauge theory, where a relation to M theory and the Atiyah-Hitchin and Taub-Newman-Unti-Tamburino (NUT) manifolds enables the construction of the smooth supergravity solution and the study of some of the 1/N corrections. The role of the enhan\ifmmode \mbox\cc\else \cc\fion in 11-dimensional supergravity is also uncovered. There is a close relation to certain multimonopole moduli space problems.