Article open access publication

On the regularization of extremal three-point functions involving giant gravitons

Physics Letters B, Elsevier, ISSN 1873-2445

Volume 750, 2015

DOI:10.1016/j.physletb.2015.09.056, Dimensions: pub.1005468774,


* Corresponding author



  1. (1) University of Copenhagen, grid.5254.6, KU
  2. (2) Queen Mary University of London, grid.4868.2



United Kingdom




In the AdS5/CFT4 set-up, extremal three-point functions involving two giant 1/2 BPS gravitons and one point-like 1/2 BPS graviton, when calculated using semi-classical string theory methods, match the corresponding three-point functions obtained in the tree-level gauge theory. The string theory computation relies on a certain regularization procedure whose justification is based on the match between gauge and string theory. We revisit the regularization procedure and reformulate it in a way which allows a generalization to the ABJM set-up where three-point functions of 1/2 BPS operators are not protected and where a match between tree-level gauge theory and semi-classical string theory is hence not expected.


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