Gravity dual of 1+1 dimensional Bjorken expansion

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dc.creatorKajantie, K.
dc.creatorLouko, Jorma
dc.creatorTahkokallio, T.
dc.date2007-05-12
dc.date2007-11-08
dc.date.accessioned2026-07-07T10:55:31Z
dc.date.available2026-07-07T10:55:31Z
dc.descriptionWe study the application of AdS/CFT duality to longitudinal boost invariant Bjorken expansion of QCD matter produced in ultrarelativistic heavy ion collisions. As the exact (1+4)-dimensional bulk solutions for the (1+3)-dimensional boundary theory are not known, we investigate in detail the (1+1)-dimensional boundary theory, where the bulk is AdS_3 gravity. We find an exact bulk solution, show that this solution describes part of the spinless Banados-Teitelboim-Zanelli (BTZ) black hole with the angular dimension unwrapped, and use the thermodynamics of the BTZ hole to recover the time-dependent temperature and entropy density on the boundary. After separating from the holographic energy-momentum tensor a vacuum contribution, given by the extremal black hole limit in the bulk, we find that the boundary fluid is an ideal gas in local thermal equilibrium. Including angular momentum in the bulk gives a boundary flow that is boost invariant but has a nonzero longitudinal velocity with respect to the Bjorken expansion.
dc.description21 pages, 2 igures. v4: Typos corrected. Published version
dc.identifierhttps://arxiv.org/abs/0705.1791
dc.identifierhttp://arxiv.org/abs/0705.1791
dc.identifierPhys.Rev.D76:106006,2007
dc.identifierdoi:10.1103/PhysRevD.76.106006
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/186105
dc.subjectHigh Energy Physics - Theory
dc.subjectHigh Energy Physics - Phenomenology
dc.titleGravity dual of 1+1 dimensional Bjorken expansion
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