Deconfinement transition of AdS/QCD at O(α^{'3})
Abstract
We study the confinement/deconfinement phase transition of holographic AdS/QCD models by using Ricci flat AdS_{5} black holes up to O(α^{'3}), which corresponds to the λ expansion correction in the dual field theory to λ^{3/2}, where λ is the ’t Hooft coupling constant. We consider two cases: one is the hardwall AdS/QCD model where a small radius region of the AdS_{5} is removed; the other is the case where one of the spatial coordinates for the AdS_{5} space is compactified, resulting in Witten’s QCD model in 2+1 dimensions. We find that in the hardwall AdS/QCD model, the deconfinement temperature decreases when the λ expansion corrections are taken into account, while in Witten’s QCD model, the deconfinement transition always happens when the ratio of inverse temperature β to the period β_{s} of the compactified coordinate decreases to one, β/β_{s}=1, the same as the case without the O(α^{'3}) correction.
 Publication:

Physical Review D
 Pub Date:
 November 2007
 DOI:
 10.1103/PhysRevD.76.106001
 arXiv:
 arXiv:0707.2013
 Bibcode:
 2007PhRvD..76j6001C
 Keywords:

 11.25.Hf;
 04.65.+e;
 04.70.Dy;
 Conformal field theory algebraic structures;
 Supergravity;
 Quantum aspects of black holes evaporation thermodynamics;
 High Energy Physics  Theory;
 General Relativity and Quantum Cosmology;
 High Energy Physics  Phenomenology
 EPrint:
 Latex, 14 pages