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An attractive mechanism to break supersymmetry in vacua with zero vacuumenergy arose in E_8 x E_8 heterotic models with hidden sector gauginocondensate. An H-flux balances the exponentially small condensate on shell andfixes the complex structure moduli. At quantum level this balancing is,however, obstructed by the quantization of the H-flux. We show that the warpedflux compactification background in heterotic M-theory can solve this problemthrough a warp-factor suppression of the integer flux relative to thecondensate. We discuss the suppression mechanism both in the M-theory and the4-dimensional effective theory and provide a derivation of the condensate'ssuperpotential which is free of delta-function squared ambiguities.Comment: 12 pages, PRL versio

physical review letters

Supersymmetry Breaking with Zero Vacuum Energy in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>M</mml:mi></mml:math>-Theory Flux Compactifications

Supersymmetry Breaking with Zero Vacuum Energy inM-Theory Flux Compactifications