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Vector-axial vector correlators in weak electric field and the holographic dynamics of the chiral condensate
Iatrakis I., Kiritsis E.
Journal of High Energy Physics 2 (2012) 64 - http://hal.in2p3.fr/in2p3-00714888
Physique/Physique des Hautes Energies - Phénoménologie
Physique/Physique des Hautes Energies - Théorie
Vector-axial vector correlators in weak electric field and the holographic dynamics of the chiral condensate
I. Iatrakis1, E. Kiritsis1, 2
1 :  CCTP - Crete Center for Theoretical Physics
http://hep.physics.uoc.gr/
University of Crete
Heraklion, Crete
Grèce
2 :  APC - UMR 7164 - AstroParticule et Cosmologie
http://www.apc.univ-paris7.fr/
CNRS : UMR7164 – IN2P3 – Observatoire de Paris – Université Paris VII - Paris Diderot – CEA : DSM/IRFU
APC - UMR 7164, Université Paris Diderot, 10 rue Alice Domon et Léonie Duquet, case postale 7020, F-75205 Paris Cedex 13
France
APC - THEORIE
The transverse part of the vector-axial vector flavor current correlator in the presence of weak external electric field is studied using holography. The correlator is calculated using a bottom-up model arxiv:1003.2377 {proposed recently}, that includes the non-linear dynamics of the chiral condensate. It is shown that for low momenta the result agrees with the relation proposed by arXiv:1010.0718 {Son and Yamamoto} motivated by a simpler holographic model. For large Euclidean momenta however, the two results diverge. In the process, the difference of the vector and axial vector two point functions is also calculated. At large Euclidean momenta it is found that the first non-perturbative contribution, decreases as $q^{-6}$ as expected from QCD.

Articles dans des revues avec comité de lecture
2012
Journal of High Energy Physics
Publisher Institute of Physics (IOP)
ISSN 1126-6708 (eISSN : 1029-8479)
2
64

17 pages, 5 figures
Lien vers le texte intégral : 
http://fr.arXiv.org/abs/1109.1282