The Low-energy expansion of the one loop type II superstring amplitude
Oct, 199924 pages
Published in:
- Phys.Rev.D 61 (2000) 104011
e-Print:
- hep-th/9910056 [hep-th]
Report number:
- DAMTP-1999-124,
- CERN-TH-99-200,
- SACLAY-SPH-T-99-071
Citations per year
Abstract:
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.- string model
- supersymmetry
- dimension: 10
- scattering amplitude: (4graviton)
- effective action
- expansion: momentum
- propagator: scalar
- duality
- supergravity
- invariance: modular
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