On Operator Mixing in N=4 SYM
High Energy Physics - Theory
2009-11-07 v1
Abstract
We resolve the mixing of the scalar operators of naive dimension 4 belonging to the representation 20' of the SU(4) R-symmetry in N=4 SYM. We compute the order g^2 corrections to their anomalous dimensions and show the absence of instantonic contributions thereof. Ratios of the resulting expressions are irrational numbers, even in the large N limit where, however, we observe the expected decoupling of double-trace operators from single-trace ones. We briefly comment on the generalizations of our results required in order to make contact with the double scaling limit of the theory conjectured to be holographically dual to type IIB superstring on a pp-wave.
Cite
@article{arxiv.hep-th/0205321,
title = {On Operator Mixing in N=4 SYM},
author = {Massimo Bianchi and Burkhard Eden and Giancarlo Rossi and Yassen S. Stanev},
journal= {arXiv preprint arXiv:hep-th/0205321},
year = {2009}
}
Comments
32 pages, 2 figures