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Partial non-renormalisation of the stress-tensor four-point function in N=4 SYM and AdS/CFT
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Partial non-renormalisation of the stress-tensor four-point function in N=4 SYM and AdS/CFT
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We show that, although the correlator of four stress-tensor multiplets in N=4 SYM is known to have radiative corrections, certain linear combinations of its components are protected from perturbative renormalisation and remain at their free-field values. This result is valid for weak as well as for strong coupling and for any gauge group. Our argument uses Intriligator's insertion formula, and includes a proof that the possible contact term contributions cannot change the form of the amplitudes. Combining this new non-renormalisation theorem with Maldacena's conjecture allows us to make a prediction for the structure of the corresponding correlator in AdS supergravity. This is verified by first considerably simplifying the strong coupling expression obtained by recent supergravity calculations, and then showing that it does indeed exhibit the expected structure.
Forward citations
Cited by 6 Pith papers
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Energy-Energy Correlators at Strong Coupling
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