Embedding vs. 6D twistors [PDF]
W. SiegelWe review the relation between the "embedding" formalism and spinorial projective space. The latter is more convenient when treating spin (and indispensable for supersymmetry), as it maintains manifest conformal symmetry while using 4-dimensional indices on fields/operators. It does this by solving all algebraic constraints using 6-dimensional (off-shell) twistors.View original: http://arxiv.org/abs/1204.5679
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