Operator Mixing and the BMN Correspondence
Abstract
In this note we update the discussion of the BMN correspondence and string interactions in [4] to incorporate the effects of operator mixing. We diagonalize the matrix of two point functions of single and double trace operators, and compute the eigenoperators and their anomalous dimensions to order g_{2}^{2}λ'. Operators in different R symmetry multiplets remain degenerate at this order; we propose this is a consequence of supersymmetry. We also calculate the corresponding energy shifts in string theory, and find a discrepancy with field theory results, indicating possible new effects in lightcone string field theory.
 Publication:

Journal of High Energy Physics
 Pub Date:
 October 2002
 DOI:
 10.1088/11266708/2002/10/068
 arXiv:
 arXiv:hepth/0209002
 Bibcode:
 2002JHEP...10..068C
 Keywords:

 High Energy Physics  Theory
 EPrint:
 18pp. Harvmac. v2: Explanation of degeneracy added to end of section 2, minor corrections