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  New integrable system of 2dim fermions from strings on AdS(5) x S-5

Alday, L. F., Arutyunov, G., & Frolov, S. (2006). New integrable system of 2dim fermions from strings on AdS(5) x S-5. Journal of High Energy Physics, 2006(1): 078.

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 Urheber:
Alday, L. F.1, Autor
Arutyunov, Gleb, Autor
Frolov, Sergey2, Autor
Affiliations:
1External Organizations, ou_persistent13              
2Quantum Gravity & Unified Theories, AEI-Golm, MPI for Gravitational Physics, Max Planck Society, ou_24014              

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 Zusammenfassung: We consider classical superstrings propagating on AdS5 × S5 space-time. We consistently truncate the superstring equations of motion to the so-called fraktur sfraktur u(1|1) sector. By fixing the uniform gauge we show that physical excitations in this sector are described by two complex fermionic degrees of freedom and we obtain the corresponding lagrangian. Remarkably, this lagrangian can be cast in a two-dimensional Lorentz-invariant form. The kinetic part of the lagrangian induces a non-trivial Poisson structure while the hamiltonian is just the one of the massive Dirac fermion. We find a change of variables which brings the Poisson structure to the canonical form but makes the hamiltonian nontrivial. The hamiltonian is derived as an exact function of two parameters: the total S5 angular momentum J and string tension λ; it is a polynomial in 1/J and in (λ')1/2 where λ' = λ/J2 is the effective BMN coupling. We identify the string states dual to the gauge theory operators from the closed fraktur sfraktur u(1|1) sector of Script N = 4 SYM and show that the corresponding near-plane wave energy shift computed from our hamiltonian perfectly agrees with that recently found in the literature. Finally we show that the hamiltonian is integrable by explicitly constructing the corresponding Lax representation.

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Sprache(n): eng - English
 Datum: 2006-01
 Publikationsstatus: Erschienen
 Seiten: -
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
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 Identifikatoren: eDoc: 297768
ISI: 000235034000078
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Titel: Journal of High Energy Physics
  Alternativer Titel : J. High Energy Phys.
Genre der Quelle: Zeitschrift
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Ort, Verlag, Ausgabe: -
Seiten: - Band / Heft: 2006 (1) Artikelnummer: 078 Start- / Endseite: - Identifikator: ISSN: 1126-6708