Equation of State and Viscosities from a Gravity Dual of the Gluon Plasma
Equation of State and Viscosities from a Gravity Dual of the Gluon Plasma
Yaresko, R.; Kämpfer, B.
.Employing new precision data of the equation of state of the SU(3) Yang-Mills theory (gluon plasma) the dilaton potential of the gravity dual is adjusted in the temperature range (1 - 10) T_c in a bottom-up approach. The ratio of bulk viscosity to shear viscosity follows then as zeta/eta approx\pi Delta v_s^2 for Delta v_s^2 < 0.2 and achieves a maximum value of 0.95 at Delta v_s^2 approx 0.32, where Delta v_s^2 is the non-conformality measure, while the ratio of shear viscosity to entropy density is known as (4 \pi)^{-1} for the considered special set-up with Hilbert action on the gravity side.
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Contribution to WWW
e-Print:arXiv:1306.0214: http://arxiv.org/abs/1306.0214 -
Physics Letters B 747(2015), 36
DOI: 10.1016/j.physletb.2015.05.034
Cited 18 times in Scopus
Permalink: https://www.hzdr.de/publications/Publ-19074