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  Exacting N=4 Superconformal Symmetry

Bargheer, T., Beisert, N., Galleas, W., Loebbert, F., & McLoughlin, T. (2009). Exacting N=4 Superconformal Symmetry. Journal of High Energy Physics, 2009(11): 056. doi:10.1088/1126-6708/2009/11/056.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-461C-3 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-461F-E
Genre: Journal Article

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 Creators:
Bargheer, Till1, Author              
Beisert, Niklas1, Author              
Galleas, Wellington1, Author              
Loebbert, Florian1, Author              
McLoughlin, Tristan1, Author              
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1Duality & Integrable Structures, AEI-Golm, MPI for Gravitational Physics, Max Planck Society, ou_24016              

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 Abstract: Tree level scattering amplitudes in N=4 super Yang-Mills theory are almost, but not exactly invariant under the free action of the N=4 superconformal algebra. What causes the non-invariance is the holomorphic anomaly at poles where external particles become collinear. In this paper we propose a deformation of the free superconformal representation by contributions which change the number of external legs. This modified classical representation not only makes tree amplitudes fully invariant, but it also leads to additional constraints from symmetry alone mediating between hitherto unrelated amplitudes. Moreover, in a constructive approach it appears to fully constrain all tree amplitudes when combined with dual superconformal alias Yangian symmetry.

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 Dates: 2009
 Publication Status: Published in print
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 Identifiers: eDoc: 430673
Other: arXiv:0905.3738
DOI: 10.1088/1126-6708/2009/11/056
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Title: Journal of High Energy Physics
Source Genre: Journal
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Pages: - Volume / Issue: 2009 (11) Sequence Number: 056 Start / End Page: - Identifier: -