On the strong coupling behavior of heterotic and type-I orbifolds

Authors
Gregori, A
Citation
A. Gregori, On the strong coupling behavior of heterotic and type-I orbifolds, J HIGH EN P, 2001(3), 2001, pp. NIL_601-NIL_620
Citations number
36
Categorie Soggetti
Physics
Journal title
JOURNAL OF HIGH ENERGY PHYSICS
ISSN journal
10298479 → ACNP
Volume
2001
Issue
3
Year of publication
2001
Pages
NIL_601 - NIL_620
Database
ISI
SICI code
1029-8479(200103)2001:3<NIL_601:OTSCBO>2.0.ZU;2-Y
Abstract
We study the bulk effective theory of a class of orbifolds of the type-IIB string with D5-branes, compactified to four dimensions. These constructions are connected, in a region of their moduli space, to some orbifolds of the type-I and heterotic string. We compare the effective actions through the coupling of the R-2 term, and we argue that these orbifolds provide non-per turbative deformations of the latter, in which the gauge group is entirely non perturbative.