Thermodynamics of the QCD plasma and the large-N limit

Details Thermodynamics of the QCD plasma and the large-N limit Thermodynamics of the QCD plasma and the large-N limit

2009-07-21

arxiv.org/abs/0907.3719v2

Phys.Rev.Lett.103:232001,2009

Physics

High Energy Physics

High Energy Physics - Lattice

1+38 pages, 13 eps figures; v2: added references

Scientific paper

10.1103/PhysRevLett.103.232001

The equilibrium thermodynamic properties of the SU(N) plasma at finite temperature are studied non-perturbatively in the large-N limit, via lattice simulations. We present high-precision numerical results for the pressure, trace of the energy-momentum tensor, energy density and entropy density of SU(N) Yang-Mills theories with N=3, 4, 5, 6 and 8 colors, in a temperature range from 0.8T_c to 3.4T_c (where T_c denotes the critical deconfinement temperature). The results, normalized according to the number of gluons, show a very mild dependence on N, supporting the idea that the dynamics of the strongly-interacting QCD plasma could admit a description based on large-N models. We compare our numerical data with general expectations about the thermal behavior of the deconfined gluon plasma and with various theoretical descriptions, including, in particular, the improved holographic QCD model recently proposed by Kiritsis and collaborators. We also comment on the relevance of an AdS/CFT description for the QCD plasma in a phenomenologically interesting temperature range where the system, while still strongly-coupled, approaches a `quasi-conformal' regime characterized by approximate scale invariance. Finally, we perform an extrapolation of our results to the N to $\infty$ limit.

Affiliated with

Also associated with

No associations

Rating

Thermodynamics of the QCD plasma and the large-N limit does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Thermodynamics of the QCD plasma and the large-N limit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Thermodynamics of the QCD plasma and the large-N limit will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-176652