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Umut Gürsoy et al JHEP12(2009)056 doi:10.1088/1126-6708/2009/12/056

Thermal transport and drag force in improved holographic QCD

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Umut Gürsoya, Elias Kiritsisb, Georgios Michalogiorgakisc and Francesco Nittid

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Abstract References Cited By
We calculate the bulk viscosity, drag force and jet quenching parameter in Improved Holographic QCD. We find that the bulk viscosity rises near the phase transition but does not exceed the shear viscosity. The drag force shows the effects of asymptotic freedom both as a function of velocity and temperature. It indicates diffusion times of heavy quarks in rough agreement with data. The jet quenching parameter values computed via the light-like Wilson loop are in the lower range suggested by data.

Keywords

Hadronic Colliders

Gauge-gravity correspondence

 

E-print Number: 0906.1890

Cited: by |

Refers: to

PACS

12.38.Bx Perturbative calculations

12.38.Mh Quark–gluon plasma

12.38.Gc Lattice QCD calculations

21.65.-f Nuclear matter

25.75.Nq Quark deconfinement, quark–gluon plasma production, and phase transitions

24.85.+p Quarks, gluons, and QCD in nuclear reactions

Subjects

Nuclear physics

Particle physics and field theory

Dates

Issue 12 (December 2009)

Received 11 September 2009, accepted for publication 21 November 2009

Published 18 December 2009



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