Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2009-06-24
JHEP 0910:043,2009
Physics
High Energy Physics
High Energy Physics - Theory
25 pages; ver2: minor typos fixed, literature added, matches the published version
Scientific paper
Boost-invariant dynamics of a strongly-coupled conformal plasma is studied in the regime of early proper-time using the AdS/CFT correspondence. It is shown, in contrast with the late-time expansion, that a scaling solution does not exist. The boundary dynamics in this regime depends on initial conditions encoded in the bulk behavior of a Fefferman-Graham metric coefficient at initial proper-time. The relation between the early-time expansion of the energy density and initial conditions in the bulk of AdS is provided. As a general result it is proven that a singularity of some metric coefficient in Fefferman-Graham frame exists at all times. Requiring that this singularity at tau = 0 is a mere coordinate singularity without the curvature blow-up gives constraints on the possible boundary dynamics. Using a simple Pade resummation for solutions satisfying the regularity constraint, the features of a transition to local equilibrium, and thus to the hydrodynamical late-time regime, have been observed. The impact of this study on the problem of thermalization is discussed.
Beuf Guillaume
Heller Michal P.
Janik Romuald A.
Peschanski Robi
No associations
LandOfFree
Boost-invariant early time dynamics from AdS/CFT 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 Boost-invariant early time dynamics from AdS/CFT, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Boost-invariant early time dynamics from AdS/CFT will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-105738