TY - JOUR

T1 - Universal stress-tensor correlation functions of strongly coupled conformal fluids

AU - Brustein, Ram

AU - Medved, A. J.M.

N1 - Funding Information:
We thank Ofer Aharony, Misha Lublinsky, Sasha Milov, Kyriakos Papadodimas, Jurgen Schukraft, Sheer El-Showk, Raimond Snellings, Amos Yarom for helpful discussions. The research of R.B. was supported by the Israel Science Foundation grant No. 239/10 . The research of A.J.M.M. received support from a Rhodes University Discretionary Grant .

PY - 2013/7/9

Y1 - 2013/7/9

N2 - We have shown in two accompanying papers that, for Einstein gravity, the graviton multi-point functions are universal in a particular kinematic region and depend only on the (generalized) Mandelstam variable s. The effects of the leading corrections to Einstein gravity were shown to be similarly universal, inducing a specific difference in the angular dependence. Here we show, relying on the gauge-gravity duality, that the stress-tensor correlation functions of conformal fluids whose gravitational dual is either Einstein gravity or its leading correction are also universal. We discuss the possible significance of these results to multi-particle correlations in heavy-ion collisions. We show that, to test our ideas, the stress-energy correlation functions have to measured rather than the standard multiplicity correlation functions. We then discuss schematically how stress-energy correlations in heavy-ion collisions can be used to test our findings. We argue that, if these correlations can be measured precisely enough, they will provide a unique way to probe the existence of a gravitational dual to the quark-gluon plasma and to determine its universality class.

AB - We have shown in two accompanying papers that, for Einstein gravity, the graviton multi-point functions are universal in a particular kinematic region and depend only on the (generalized) Mandelstam variable s. The effects of the leading corrections to Einstein gravity were shown to be similarly universal, inducing a specific difference in the angular dependence. Here we show, relying on the gauge-gravity duality, that the stress-tensor correlation functions of conformal fluids whose gravitational dual is either Einstein gravity or its leading correction are also universal. We discuss the possible significance of these results to multi-particle correlations in heavy-ion collisions. We show that, to test our ideas, the stress-energy correlation functions have to measured rather than the standard multiplicity correlation functions. We then discuss schematically how stress-energy correlations in heavy-ion collisions can be used to test our findings. We argue that, if these correlations can be measured precisely enough, they will provide a unique way to probe the existence of a gravitational dual to the quark-gluon plasma and to determine its universality class.

UR - http://www.scopus.com/inward/record.url?scp=84879785097&partnerID=8YFLogxK

U2 - 10.1016/j.physletb.2013.06.002

DO - 10.1016/j.physletb.2013.06.002

M3 - Article

AN - SCOPUS:84879785097

SN - 0370-2693

VL - 724

SP - 144

EP - 149

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

IS - 1-3

ER -