TY - JOUR
T1 - Linearized hydrodynamics from probe-sources in the gauge-string duality
AU - Gubser, Steven S.
AU - Yarom, Amos
N1 - Funding Information:
We thank S. Pufu for collaboration on the early stages of this project. S.S.G. thanks G.-L. Ma for useful discussions. A.Y. would like to thank M. Haack and R. Helling for useful discussions. The work of S.S.G. was supported in part by the Department of Energy under Grant No. DE-FG02-91ER40671 and by the NSF under award No. PHY-0652782. A.Y. is supported in part by the Minerva foundation and by the German science foundation.
PY - 2009/5/21
Y1 - 2009/5/21
N2 - We study the response of an infinite, asymptotically static N = 4 plasma to a generic localized source in the probe approximation. At large distances, the energy-momentum tensor of the plasma includes a term which satisfies the constitutive relations of linearized hydrodynamics, but it can also include a non-hydrodynamical term which contributes at the same order as viscous corrections, or even at leading order in some cases. The conditions for the appearance of a laminar wake far behind the source and its relevance for phenomenological models used to explain di-hadron correlations are discussed. We also consider the energy-momentum tensor near the source, where the hydrodynamical approximation can be expected to break down. Our analysis encompasses a wide range of sources which are localized in the bulk of AdS, including trailing strings, mesonic and baryonic configurations of strings, and point particles.
AB - We study the response of an infinite, asymptotically static N = 4 plasma to a generic localized source in the probe approximation. At large distances, the energy-momentum tensor of the plasma includes a term which satisfies the constitutive relations of linearized hydrodynamics, but it can also include a non-hydrodynamical term which contributes at the same order as viscous corrections, or even at leading order in some cases. The conditions for the appearance of a laminar wake far behind the source and its relevance for phenomenological models used to explain di-hadron correlations are discussed. We also consider the energy-momentum tensor near the source, where the hydrodynamical approximation can be expected to break down. Our analysis encompasses a wide range of sources which are localized in the bulk of AdS, including trailing strings, mesonic and baryonic configurations of strings, and point particles.
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U2 - 10.1016/j.nuclphysb.2008.12.032
DO - 10.1016/j.nuclphysb.2008.12.032
M3 - Article
AN - SCOPUS:60549091340
SN - 0550-3213
VL - 813
SP - 188
EP - 219
JO - Nuclear Physics B
JF - Nuclear Physics B
IS - 1-2
ER -