Curvatures and potential of M-theory in D=4 with fluxes and twist

Abstract

We give the curvatures of the free differential algebra (FDA) of M--theory compactified to D=4 on a twisted seven--torus with the 4--form flux switched on. Two formulations are given, depending on whether the 1--form field strengths of the scalar fields (originating from the 3--form gauge field ${\hat{A}}^{(3)}$) are included or not in the FDA. We also give the bosonic equations of motion and discuss at length the scalar potential which emerges in this type of compactifications. For flat groups we show the equivalence of this potential with a dual formulation of the theory which has the full $\rE_{7(7)}$ symmetry.

arXiv comment14 pages, LaTeX source, typos corrected

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• The embedding tensor of Scherk-Schwarz flux compactifications from eleven dimensions
• Quantum corrections to broken N = 8 supergravity
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