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  Multiparticle one-loop amplitudes and S-duality in closed superstring theory

Green, M. B., Mafra, C. R., & Schlotterer, O. (2013). Multiparticle one-loop amplitudes and S-duality in closed superstring theory. Journal of High Energy Physics, 2013(10): 188. doi:10.1007/JHEP10(2013)188.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0014-4AFA-B Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0015-118E-C
Genre: Journal Article

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 Creators:
Green, Michael B., Author
Mafra, Carlos R.1, Author              
Schlotterer, Oliver2, Author              
Affiliations:
1Quantum Gravity & Unified Theories, AEI-Golm, MPI for Gravitational Physics, Max Planck Society, ou_24014              
2Quantum Gravity and Unified Theories, AEI Golm, MPI for Gravitational Physics, Max Planck Society, ou_24014              

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Free keywords: High Energy Physics - Theory, hep-th
 Abstract: Explicit expressions for one-loop five supergraviton scattering amplitudes in both type II superstring theories are determined by making use of the pure spinor formalism. The type IIB amplitude can be expressed in terms of a doubling of ten-dimensional super Yang--Mills tree amplitude, while the type IIA amplitude has additional pieces that cannot be expressed in that manner. We evaluate the coefficients of terms in the analytic part of the low energy expansion of the amplitude, which correspond to a series of terms in an effective action of the schematic form D^{2k}R^5 for 0\le k \le 5 (where R is the Riemann curvature). Comparison with earlier analyses of the tree amplitudes and of the four-particle one-loop amplitude leads to an interesting extension of the action of SL(2,Z) S-duality on the moduli-dependent coefficients in the type IIB theory. We also investigate closed-string five-particle amplitudes that violate conservation of the U(1) R-symmetry charge -- processes that are forbidden in supergravity. The coefficients of their low energy expansion are shown to agree with S-duality systematics. A less detailed analysis is also given of the six-point function, resulting in the vanishing of the analytic parts of the R^6 and D^4 R^6 interactions in the ten-dimensional effective action, but not in lower dimensions.

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 Dates: 2013-07-122013-09-022013
 Publication Status: Published in print
 Pages: 61 pages
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 Rev. Method: -
 Identifiers: arXiv: 1307.3534
DOI: 10.1007/JHEP10(2013)188
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Title: Journal of High Energy Physics
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Pages: - Volume / Issue: 2013 (10) Sequence Number: 188 Start / End Page: - Identifier: -