Diffusion in an expanding plasma using AdS/CFTopen access
- Authors
- Kim, Keun-Young; Sin, Sang-Jin; Zahed, Ismail
- Issue Date
- Apr-2008
- Publisher
- SPRINGER
- Keywords
- AdS-CFT correspondence; hadronic colliders
- Citation
- JOURNAL OF HIGH ENERGY PHYSICS, no.4, pp.1 - 16
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF HIGH ENERGY PHYSICS
- Number
- 4
- Start Page
- 1
- End Page
- 16
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/178793
- DOI
- 10.1088/1126-6708/2008/04/047
- ISSN
- 1126-6708
- Abstract
- We consider the diffusion of a non-relativistic heavy quark of fixed mass M, in a one-dimensionally expanding and strongly coupled plasma using the AdS/CFT duality. The Green's function constructed around a static string embedded in a background with a moving horizon, is identified with the noise correlation function in a Langevin approach. The (electric) noise decorrelation is of order 1/T(tau) while the velocity de-correlation is of order MD(tau)/T(tau). For MD > 1, the diffusion regime is segregated and the energy loss is Langevin-like. The time dependent diffusion constant D(tau) asymptotes its adiabatic limit 2/pi root lambda T(tau) when tau/tau 0 = (1/3 eta(0)tau(0))(3) where eta(0) is the drag coefficient at the initial proper time tau(0).
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