BMN operators and string field theory

Details BMN operators and string field theory BMN operators and string field theory

2002-09-30

arxiv.org/abs/hep-th/0209263v2

Phys.Lett. B549 (2002) 237-244

Physics

High Energy Physics

High Energy Physics - Theory

11 pages; v2: references added

Scientific paper

10.1016/S0370-2693(02)02908-8

We extract from gauge theoretical calculations the matrix elements of the SYM dilatation operator. By the BMN correspondence this should coincide with the 3-string vertex of light cone string field theory in the pp-wave background. We find a mild but important discrepancy with the SFT results. If the modified $O(g_2)$ matrix elements are used, the $O(g_2^2)$ anomalous dimensions are exactly reproduced without the need for a contact interaction in the single string sector.

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