Holographic models for QCD in the Veneziano limit

By Matti Järvinen, E. Kiritsis. 2011

214 citations recorded by the source corpus.

A bstractWe construct a class of bottom-up holographic models with physics comparable to the one expected from QCD in the Veneziano limit of large Nf and Nc with fixed $ x = \frac{{{N_f}}}{{{N_c}}} $ The models capture the holographic dynamics of the dilaton (dual to the YM coupling) and a tachyon (dual to the chiral condensate), and are parametrized by the real parameter x, which can take values within the range $ 0 \leqslant x < \frac{{{11}}}{{2}} $. We analyze the saddle point solutions, and draw the phase diagram at zero temperature and density. The back-reaction of flavor on the glue is fully included. We find the conformal window for x ≥ xc, and the QCD-like phase with chiral symmetry breaking at x < xc, where the critical value xc lies close to four. We also find Miransky scaling as x → xc as well as Efimov-like saddle points. By calculating the holographic β-functions, we demonstrate the “walking” behavior of the coupling in the region near and below xc.

Subfields: Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/f8552ea1a5fe5af777b3b3e4977c019e9fe18c2b

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In Nuclear and High Energy Physics

1. S. Gubser
2. Oliver DeWolfe
3. C. Rosen
4. D. Teaney
5. E. Kiritsis
6. V. Hubeny
7. M. Rangamani
8. A. Karch

Citations in the corpus

• Heavy ions and string theory (2013, background): “More details on this program, titled “VQCD”, can be found in section 5.2.”