Viscosity Correlators in Improved Holographic QCD - INSPIRE

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Viscosity Correlators in Improved Holographic QCD

Martin Krssak
(
- Bielefeld U.
)

Feb 13, 2013

10 pages

Part of Proceedings, Barcelona Postgrad Encounters on Fundamental Physics, 191-200

Contribution to:

Barcelona Postgrad Encounters on Fundamental Physics, 191-200

e-Print:

1302.3181 [hep-ph]

Report number:

BI-TP-2013-03

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ADS Abstract Service

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Abstract: (arXiv)

We study a bottom-up holographic model of large-Nc Yang-Mills theory, in which conformal invariance is broken through the introduction of a dilaton potential on the gravity side. We use the model to calculate the spectral densities of the shear and bulk channels at finite temperature. In the shear channel, we compare our results to those derived in strongly coupled N=4 Super Yang-Mills theory as well as in weakly coupled ordinary Yang-Mills. In the bulk channel, where the conformal result is trivial, we make comparisons with both perturbative and lattice QCD. In both channels, we pay particular attention into the effects of conformal invariance breaking in the IHQCD model.

Note:

10 pages, 8 figures. To appear in the proceedings of the "Barcelona Postgrad Encounters on Fundamental Physics", University of Barcelona, October 17-19, 2012

gauge field theory: Yang-Mills
expansion 1/N: color
supersymmetry: 4
quantum chromodynamics: perturbation theory
correlation function
holography
viscosity
symmetry breaking: conformal
lattice
dilaton: potential

References(24)

Figures(4)

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