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Exploiting N=2 in consistent coset reductions of type IIA
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We study compactifications of type IIA supergravity on cosets exhibiting SU(3) structure. We establish the consistency of the truncation based on left-invariance, providing a justification for the choice of expansion forms which yields gauged N=2 supergravity in 4 dimensions. We explore N=1 solutions of these theories, emphasizing the requirements of flux quantization, as well as their non-supersymmetric companions. In particular, we obtain a no-go result for de Sitter solutions at string tree level, and, exploiting the enhanced leverage of the N=2 setup, provide a preliminary analysis of the existence of de Sitter vacua at all string loop order.
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Consistent truncations and G$_2$-invariant AdS$_4$ solutions of $D=11$ supergravity
Three new G2-invariant AdS4 vacua of eleven-dimensional supergravity are found numerically, together with explicit uplift formulas and evidence that the G2-invariant sector may be complete.
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