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  Non-protected operators in N=4 SYM and multi-particle states of AdS_5 SUGRA

Arutyunov, G., Penati, S., Petkou, A. C., Santambrogio, A., & Sokatchev, E. (2002). Non-protected operators in N=4 SYM and multi-particle states of AdS_5 SUGRA. Nuclear Physics B, 643(1-3), 49-78.

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Datensatz-Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-5383-0 Versions-Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-5384-E
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 Urheber:
Arutyunov, Gleb1, Autor
Penati, S., Autor
Petkou, Anastasios C., Autor
Santambrogio, A., Autor
Sokatchev, E., Autor
Affiliations:
1Quantum Gravity & Unified Theories, AEI-Golm, MPI for Gravitational Physics, Max Planck Society, escidoc:24014              

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 Zusammenfassung: We study a class of non-protected local composite operators which emerge in the $SU(4)$-singlet channel of the OPE between two lowest dimension CPOs in ${cal N}=4$ SYM. These are quadrilinear operators which, in the free field limit, appear as double--trace color structures. When the interaction is turned on, a nontrivial mixing under renormalization occurs and they split in general into linear combinations of proper conformally invariant states which may involve both single and double traces. In a ${cal N}=1$ superspace setup we solve the mixing problem by computing the one-loop two point functions of all dimension 4 scalar operators, diagonalizing their anomalous dimension matrix and identifying the proper quasiprimary operators. We find one operator whose anomalous dimension is negative and suppressed by $1/N^2$ with respect to the anomalous dimensions of the Konishi--like operators. We identify the mechanism underlying such a suppression and give an argument to prove its occurrence at every order in perturbation theory. We discuss our results in connection with the AdS/CFT correspondence which requires such operators to be dual to multi-particle supergravity states whose energy is less than the sum of the corresponding individual single-particle states

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Sprache(n): eng - Englisch
 Datum: 2002-11-04
 Publikationsstatus: Im Druck publiziert
 Seiten: -
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: -
 Identifikatoren: eDoc: 3079
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Titel: Nuclear Physics B
Genre der Quelle: Zeitschrift
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Ort, Verlag, Ausgabe: -
Seiten: - Band / Heft: 643 (1-3) Artikelnummer: - Start- / Endseite: 49 - 78 Identifikator: -