Abstract
We construct a four-dimensional consistent truncation to the bosonic part of the universal sector of Calabi-Yau IIA compactification (i.e. the gravity multiplet, one vectormultiplet, and one hypermultiplet) in the presence of background flux and fermionic condensates generated by gravitational instantons. The condensates are controlled by the ratio of the characteristic length of the Calabi-Yau to the string length, and can be finetuned to be dominant in a region of large volume and small string coupling. The consistent truncation admits de Sitter solutions supported by the condensates, subject to certain validity conditions that we discuss.
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Terrisse, R., Tsimpis, D. Consistent truncation and de Sitter space from gravitational instantons. J. High Energ. Phys. 2019, 34 (2019). https://doi.org/10.1007/JHEP07(2019)034
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DOI: https://doi.org/10.1007/JHEP07(2019)034