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Double Field Theory and $\alpha'$ corrections: explicit examples

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arxiv 2408.04833 v3 pith:3XRJSC7B submitted 2024-08-09 hep-th gr-qc

classification hep-thgr-qc
keywords correctionssolutionsactionsalphaconstructdoubleeffectivefield
verification ladder T0 review T1 audit T2 compute T3 formal
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abstract

We construct several solutions of effective actions for string theories beyond the supergravity approximation utilizing the framework of the Double Field Theory (DFT). The DFT effective actions, which are well suited for accommodating abelian and non-abelian T dualities, are naturally written in terms of modified connections and curvatures with torsion. We construct the most general solutions with vanishing modified torsion, and such geometries don't receive quantum corrections. We also compute the leading $\alpha'$ corrections to several supergravity solutions, including a pair of geometries related by a non-abelian T duality.

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  1. Perturbative K\"ahler Moduli Inflation

    hep-th 2025-06 reject novelty 6.0 of 10

    Two classes of slow-roll inflation potentials, V0(1+C1 φ^(2/3)) and V0(1-C2 φ^(-2/3)), are derived from perturbative Kähler moduli stabilization and give r below 10^-2 and 10^-8.

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