More on a holographic dual of QCD

  title={More on a holographic dual of QCD},
  author={Tadakatsu Sakai and Shigeki Sugimoto},
  journal={Progress of Theoretical Physics},
We investigate the interactions among the pion, vector mesons and external gauge fields in the holographic dual of massless QCD proposed in a previous paper [T. Sakai and S. Sugi-moto, Prog. Theor. Phys. 113 (2005), 843; hep-th/0412141] on the basis of probe D8-branes embedded in a D4-brane background in type IIA string theory. We obtain the coupling constants by performing both analytic and numerical calculations, and compare them with experimental data. It is found that the vector meson… 

Figures from this paper

A holographic QCD and excited baryons from string theory
We study baryons of arbitrary isospin in a stringy holographic QCD model. In this D4-D8 holographic setting, the flavor symmetry is promoted to a gauge symmetry in the bulk, and produces, as KK modes
Energy momentum tensor correlators in Improved Holographic QCD
In this thesis, we study the physics of the quark gluon plasma (QGP) using holographic methods borrowed from string theory. We start our discussion by motivating the use of such machinery, explaining
Chiral currents and static properties of nucleons in holographic QCD
We analyze static properties of nucleons in the two flavor holographic QCD model of Sakai and Sugimoto described effectively by a five-dimensional U(2) Yang-Mills theory with the Chern-Simons term on
Properties of the Vacuum in Models for QCD: Holography vs. Resummed Field Theory. A Comparative Study.
This Thesis is dedicated to a comparison of the two means of studying the electromagnetic properties of the QCD vacuum -- holography and resummed field theory. In the UV range the non-pertubative QCD
Holographic Baryons : Static Properties and Form Factors from Gauge/String Duality(Nuclear Physics)
In this paper, we study properties of baryons by using a holographic dual of QCD on the basis of the D4/D8-brane configuration, where baryons are described by a soliton. We first determine the
Couplings of the rho meson in a holographic dual of QCD with Regge trajectories
The couplings gρHH of the ρ meson with a scalar meson H are calculated in a holographic dual of QCD in which the Regge trajectories for the mesons are manifest. In contrast to the conclusion in
Baryon Transition in Holographic QCD
We propose a mechanism of holographic baryon transition in the Sakai-Sugimoto (SS) model: baryons in this model can jump to different states under the mediated effect of gravitons (or glueballs by
In-Medium Effects in the Holographic Quark-Gluon Plasma
We use the gauge/gravity duality to investigate various properties of strongly coupled gauge theories, which we interpret as models for the quark-gluon plasma (QGP). In particular, we use variants of
Holographic mesons in various dimensions
Following the analysis of [1], we calculate the spectrum of fluctuations of a probe Dk-brane in the background of N Dp-branes, for k = p,p+2,p+4 and p<5. The result corresponds to the mesonic


Low energy hadron physics in holographic QCD
We present a holographic dual of four-dimensional, large N_c QCD with massless flavors. This model is constructed by placing N_f probe D8-branes into a D4 background, where supersymmetry is
Towards a holographic dual of large- N c QCD
We study N f D6-brane probes in the supergravity background dual to N c D4-branes compactified on a circle with supersymmetry-breaking boundary conditions. In the limit in which the resulting
The Holographic Life of the η
In the string holographic dual of large-Nc QCD with Nf ∞avours of (1), the · 0 meson is massless at inflnite Nc and dual to a collective ∞uctuation of Nf D6-brane probes in a supergravity background.
On the Couplings of Vector Mesons in AdS/QCD
We address, in the AdS/CFT context, the issue of the universality of the couplings of the ρ meson to other hadrons. Exploring some models, we find that generically the ρ-dominance prediction fρgρHH =
Interpolating between low and high energy QCD via a 5D Yang-Mills model
We describe the Goldstone bosons of massless QCD together with an infinite number of spin-1 mesons. The field content of the model is SU(Nf) × SU(Nf) Yang-Mills in a compact extra-dimension.
QCD and dimensional deconstruction
Motivated by phenomenological models of hidden local symmetries and the ideas of dimensional deconstruction and gauge/gravity duality, we consider the model of an ``open moose.'' Such a model has a
Chiral symmetry breaking and pions in nonsupersymmetric gauge / gravity duals
We study gravity duals of large N nonsupersymmetric gauge theories with matter in the fundamental representation by introducing a D7-brane probe into deformed AdS backgrounds. In particular, we
Chiral Symmetry Breaking and Pions in Non-Supersymmetric Gauge/Gravity Duals
We study gravity duals of large N non-supersymmetric gauge theories with matter in the fundamental representation by introducing a D7-brane probe into deformed AdS backgrounds. In particular, we