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Spinor-Helicity Formalism for Massless Fields in AdS₄ III: Contact Four-Point Amplitudes

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arxiv 2004.07989 v1 pith:FCXFPA2L submitted 2020-04-16 hep-th

Spinor-Helicity Formalism for Massless Fields in AdS₄ III: Contact Four-Point Amplitudes

classification hep-th
keywords amplitudescontactcanonicalformformalismfour-pointspacespinor-helicity
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We study contact four-point amplitudes in the spinor-helicity formalism in anti-de Sitter space. We find that these amplitudes can be brought to an especially simple form, which we call canonical. Next, we classify consistent contact amplitudes by requiring correct transformation properties with respect to the AdS isometry algebra. Finally, we establish a connection between the canonical form of AdS amplitudes and scalar multi-trace conformal primaries in flat space.

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