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The low energy expansion of the one-loop type II superstring amplitude

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arxiv hep-th/9910056 v2 pith:TO43QG4J submitted 1999-10-06 hep-th

Michael B. Green , Pierre Vanhove (DAMTP , UK) This is my paper · ORCID
classification hep-th
keywords amplitudeone-looppowerssuperstringtermstheorytypecoefficients
verification ladder T0 review T1 audit T2 compute T3 formal
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The one-loop four-graviton amplitude in either of the type II superstring theories is expanded in powers of the external momenta up to and including terms of order s^4 log s R^4, where R^4 denotes a specific contraction of four linearized Weyl tensors and s is a Mandelstam invariant. Terms in this series are obtained by integrating powers of the two-dimensional scalar field theory propagator over the toroidal world-sheet as well as the moduli of the torus. The values of these coefficients match expectations based on duality relations between string theory and eleven-dimensional supergravity.

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Cited by 6 Pith papers

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