Mathematics Colloquia and Seminars
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Fixing of moduli by fluxes in type IIA string theoryQMAP Seminar
|Speaker: ||Klaus Behrndt, Potsdam|
|Location: ||416 Phys-Geo|
|Start time: ||Tue, Oct 12 2004, 4:15PM|
Compactifications in the presence of fluxes can lift
(at least part of) the moduli space of vacua.
This has been explored to a large extent in type IIB
string theory. We explore the analogous setup on the IIA
side and argue that all (closed string) moduli can
be fixed by fluxes. The fluxes have a strong back reaction
on the geometry resulting in an internal space that has
only weak SU(3) holonomy (or is nearly Kaehler).
The 4d vacuum is AdS and we argue that it can be
lifted to a dS vacuum as in the KKLT-scenario on the
IIB side or by employing the Brown/Teitelboim mechanism.