Five-Brane Configurations, Conformal Field Theories and the Strong-Coupling Problem

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dc.creatorKiritsis, E.
dc.creatorKounnas, C.
dc.creatorPetropoulos, P. M.
dc.creatorRizos, I.
dc.date2003-12-28
dc.date.accessioned2026-07-07T04:16:26Z
dc.date.available2026-07-07T04:16:26Z
dc.descriptionDecoupling limits of physical interest occur in regions of space--time where the string coupling diverges. This is illustrated in the celebrated example of five-branes. There are several ways to overcome this strong-coupling problem. We review those which are somehow related to two-dimensional conformal field theories. One method consists of distributing the branes over transverse space, either on a circle or over a sphere. Those distributions are connected to conformal field theories by T-dualities or lead to a new kind of sigma model where the target space is a patchwork of pieces of exact conformal-field-theory target spaces. An alternative method we discuss is the introduction of diluted F-strings, which trigger a marginal deformation of an AdS$_3\times S^3\times T^4$ background with a finite string coupling. Our discussion raises the question of finding brane configurations, their spectrum, their geometry, and their interpretation in terms of two-dimensional conformal models.
dc.description18 pages, 5 figures
dc.identifierhttps://arxiv.org/abs/hep-th/0312300
dc.identifierhttp://arxiv.org/abs/hep-th/0312300
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/52347
dc.subjectHigh Energy Physics - Theory
dc.titleFive-Brane Configurations, Conformal Field Theories and the Strong-Coupling Problem
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