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Dual Superconformal Invariance, Momentum Twistors and Grassmannians

Abstract:

Dual superconformal invariance has recently emerged as a hidden symmetry of planar scattering amplitudes in N=4 super Yang-Mills theory. This symmetry can be made manifest by expressing amplitudes in terms of `momentum twistors', as opposed to the usual twistors that make the ordinary superconformal properties manifest. The relation between momentum twistors and on-shell momenta is algebraic, so the translation procedure does not rely on any choice of space-time signature. We show that tree a...

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Publication status:
Published

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Journal:
JHEP More from this journal
Volume:
0911
Issue:
11
Pages:
045
Publication date:
2009-09-01
DOI:
EISSN:
1029-8479
ISSN:
1029-8479
Keywords:
Pubs id:
pubs:190399
UUID:
uuid:cfbcf434-afbc-4f56-b664-1b81ad5b8b3f
Local pid:
pubs:190399
Source identifiers:
190399
Deposit date:
2012-12-19

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