Examinando por Autor "Faraggi, A."

Mostrando 1 - 3 de 3
  • Miniatura
    Ítem
    Antisymmetric Wilson loops in N= 4 SYM: from exact results to non-planar corrections
    (Springer Verlag, 2018-08) Canazas Garay, A.F.; Faraggi, A.; Mück, W.
    We consider the vacuum expectation values of 1/2-BPS circular Wilson loops in N= 4 super Yang-Mills theory in the totally antisymmetric representation of the gauge group U(N) or SU(N). Localization and matrix model techniques provide exact, but rather formal, expressions for these expectation values. In this paper we show how to extract the leading and sub-leading behavior in a 1/N expansion with fixed ’t Hooft coupling starting from these exact results. This is done by exploiting the relation between the generating function of antisymmetric Wilson loops and a finite-dimensional quantum system known as the truncated harmonic oscillator. Sum and integral representations for the 1/N terms are provided. © 2018, The Author(s).
  • Miniatura
    Ítem
    Toward precision holography in type IIA with Wilson loops
    (Springer Verlag, 2018-08) Aguilera-Damia, J.; Faraggi, A.; Pando Zayas, L.A.; Rathee, V.; Silva, G.A.
    We study the one-loop effective action of certain classical type IIA string configurations in AdS4 × ℂℙ3. These configurations are dual to Wilson loops in the N= 6 U(N)k × U(N)−k Chern-Simons theory coupled to matter whose expectation values are known via supersymmetric localization. We compute the one-loop effective actions using two methods: perturbative heat kernel techniques and full ζ-function regularization. We find that the result of the perturbative heat kernel method matches the field theory prediction at the appropriate order while the ζ-function approach seems to lead to a disagreement. © 2018, The Author(s).
  • Miniatura
    Ítem
    Zeta-function regularization of holographic Wilson loops
    (American Physical Society, 2018-08) Aguilera-Damia, J.; Faraggi, A.; Pando Zayas, L.A.; Rathee, V.; Silva, G.A.
    Using ζ-function regularization, we study the one-loop effective action of fundamental strings in AdS5×S5 dual to the latitude 14-BPS Wilson loop in N=4 super-Yang-Mills theory. To avoid certain ambiguities inherent to string theory on curved backgrounds we subtract the effective action of the holographic 12-BPS Wilson loop. We find agreement with the expected field theory result at first order in the small latitude angle expansion but discrepancies at higher order. © 2018 authors. Published by the American Physical Society.