Linearized hydrodynamics from probe-sources in the gauge-string duality

Steven S. Gubser, Amos Yarom

Research output: Contribution to journalArticlepeer-review

10 Scopus citations

Abstract

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.

Original languageEnglish (US)
Pages (from-to)188-219
Number of pages32
JournalNuclear Physics B
Volume813
Issue number1-2
DOIs
StatePublished - May 21 2009

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

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