Warping the Kahler potential of F-theory/IIB flux compactifications

We identify the low-energy Kahler potential of warped F-theory/IIB flux compactifications whose light spectrum includes universal, Kahler, axionic and mobile D3-brane moduli. The derivation is based on four-dimensional local superconformal symmetry and holomorphy of brane instanton contributions and it reproduces and generalises previous partial results. We compute the resulting kinetic terms, which show their explicit dependence on the warping. The Kahler potential satisfies the no-scale condition and produces, at leading order in the large volume expansion, a specific correction to the unwarped Kahler potential.