ANOMALIES, D-FLATNESS AND SMALL INSTANTONS

Authors
LEIGH RG
Citation
Rg. Leigh, ANOMALIES, D-FLATNESS AND SMALL INSTANTONS, Physics letters. Section B, 378(1-4), 1996, pp. 97-100
Citations number
13
Categorie Soggetti
Physics
Journal title
Physics letters. Section B → ACNP
ISSN journal
03702693
Volume
378
Issue
1-4
Year of publication
1996
Pages
97 - 100
Database
ISI
SICI code
0370-2693(1996)378:1-4<97:ADASI>2.0.ZU;2-Z
Abstract
Recently, Witten has proposed a mechanism for symmetry enhancement in SO(32) heterotic string theory, where the singularity obtained by shri nking an instanton to zero size is resolved by the appearance of an Sp (1) gauge symmetry. In this short letter, we consider spacetime constr aints from anomaly cancellation in six dimensions and D-flatness and d emonstrate a subtlety which arises in the moduli space when many insta ntons are shrunk to zero size.