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One-loop Gluon Amplitudes in AdS (2110.09861v2)

Published 19 Oct 2021 in hep-th

Abstract: We initiate the study of one-loop gluon amplitudes in AdS space. These amplitudes were recently computed at tree level for a variety of backgrounds of the form $AdS_{d+1} \times S3$. For concreteness, we compute the one-loop correction to the massless gluon amplitude on $AdS_5\times S3$, which corresponds to the four-point correlator of the flavor current multiplet in the dual 4d $\mathcal{N}=2$ SCFT. This requires solving a mixing problem that involves tree-level amplitudes of arbitrarily massive Kaluza-Klein modes. The final answer has the same color structure as in flat space but the dependence on Mandelstam variables is more complicated, with logarithms replaced by polygamma functions.

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