Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2009-11-12
JHEP 1001:011,2010
Physics
High Energy Physics
High Energy Physics - Theory
20 pages, LaTeX; references added
Scientific paper
10.1007/JHEP01(2010)011
In this note we analyse the issue of moduli stabilisation in 4d models obtained from heterotic string compactifications on manifolds with SU(3) structure with standard embedding. In order to deal with tractable models we first integrate out the massive fields. We argue that one can not only integrate out the moduli fields, but along the way one has to truncate also the corresponding matter fields. We show that the effective models obtained in this way do not have satisfactory solutions. We also look for stabilised vacua which take into account the presence of the matter fields. We argue that this also fails due to a no-go theorem for Minkowski vacua in the moduli sector which we prove in the end. The main ingredient for this no-go theorem is the constraint on the fluxes which comes from the Bianchi identity.
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