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arXiv · 1602.01101

Three-point Functions in Duality-Invariant Higher-Derivative Gravity

Usman Naseer·Barton Zwiebach
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Abstract

Doubled $α'$-geometry is the simplest higher-derivative gravitational theory with exact global duality symmetry. We use the double metric formulation of this theory to compute on-shell three-point functions to all orders in $α'$. A simple pattern emerges when comparing with the analogous bosonic and heterotic three-point functions. As in these theories, the amplitudes factorize. The theory has no Gauss-Bonnet term, but contains a Riemann-cubed interaction to second order in $α'$.

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Usman Naseer, Barton Zwiebach. 2016-06-07. Three-point Functions in Duality-Invariant Higher-Derivative Gravity. https://doi.org/10.1007/jhep03(2016)147

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