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ID: 3100.0, MPI für Gravitationsphysik / Quantum Gravity and Unified Theories
BMN Correlators and Operator Mixing in N=4 Super Yang-Mills Theory
Authors:Beisert, Niklas; Kristjansen, Charlotte; Plefka, Jan; Semenoff, G.; Staudacher, Matthias
Language:English
Date of Publication (YYYY-MM-DD):2003-02-03
Title of Journal:Nuclear Physics B
Volume:650
Issue / Number:1-2
Start Page:125
End Page:161
Review Status:Peer-review
Audience:Not Specified
Abstract / Description:Correlation functions in perturbative N=4 supersymmetric Yang-Mills theory are examined in the Berenstein-Maldacena-Nastase (BMN) limit. We demonstrate that non-extremal four-point functions of chiral primary fields are ill-defined in that limit. This lends support to the assertion that only gauge theoretic two-point functions should be compared to pp-wave strings. We further refine the analysis of the recently discovered non-planar corrections to the planar BMN limit. In particular, a full resolution to the genus one operator mixing problem is presented, leading to modifications in the map between BMN operators and string states. We give a perturbative construction of the correct operators and we identify their anomalous dimensions. We also distinguish symmetric, antisymmetric and singlet operators and find, interestingly, the same torus anomalous dimension for all three. Finally, it is discussed how operator mixing effects modify three point functions at the classical level and, at one loop, allow us to recover conformal invarianc
External Publication Status:published
Document Type:Article
Communicated by:Hermann Nicolai
Affiliations:MPI für Gravitationsphysik/Quantum Gravity and Unified Theories
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