On holographic thermalization and gravitational collapse of massless scalar fields

Wu B (2012)
Journal Of High Energy Physics 2012(10): 133.

Zeitschriftenaufsatz | Veröffentlicht | Englisch
 
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Abstract / Bemerkung
In this paper we study thermalization in a strongly coupled system via AdS/CFT. Initially, the energy is injected into the system by turning on a spatially homogenous scalar source coupled to a marginal composite operator. The thermalization process is studied by numerically solving Einstein's equations coupled to a massless scalar field in the Poincare patch of AdS(5). We define a thermalization time t(T) on the AdS side, which has an interpretation in terms of a spacelike Wilson loop < W(l similar or equal to 1/T)> in CFT. Here T is the thermal equilibrium temperature. We study both cases with the source turned on in short (Delta t less than or similar to 1/T) and long (Delta t greater than or similar to 1/T) durations. In the former case, the thermalization time t(T) = gt/T less than or similar to 1/T and the coefficient gt similar or equal to 0.73 in the limit Delta t less than or similar to 0.02/T. In the latter case, we find double-and multiple-collapse solutions, which may be interpreted as the gravity duals of two- or multi-stage thermalization in CFT. In all the cases our results indicate that such a strongly coupled system thermalizes in a typical time scale t/T similar or equal to O(1)/T.
Stichworte
AdS-CFT Correspondence; Holography and quark-gluon plasmas
Erscheinungsjahr
2012
Zeitschriftentitel
Journal Of High Energy Physics
Band
2012
Ausgabe
10
Art.-Nr.
133
ISSN
1029-8479
eISSN
1029-8479
Page URI
https://pub.uni-bielefeld.de/record/2548580

Zitieren

Wu B. On holographic thermalization and gravitational collapse of massless scalar fields. Journal Of High Energy Physics. 2012;2012(10): 133.
Wu, B. (2012). On holographic thermalization and gravitational collapse of massless scalar fields. Journal Of High Energy Physics, 2012(10), 133. doi:10.1007/JHEP10(2012)133
Wu, B. (2012). On holographic thermalization and gravitational collapse of massless scalar fields. Journal Of High Energy Physics 2012:133.
Wu, B., 2012. On holographic thermalization and gravitational collapse of massless scalar fields. Journal Of High Energy Physics, 2012(10): 133.
B. Wu, “On holographic thermalization and gravitational collapse of massless scalar fields”, Journal Of High Energy Physics, vol. 2012, 2012, : 133.
Wu, B.: On holographic thermalization and gravitational collapse of massless scalar fields. Journal Of High Energy Physics. 2012, : 133 (2012).
Wu, Bin. “On holographic thermalization and gravitational collapse of massless scalar fields”. Journal Of High Energy Physics 2012.10 (2012): 133.

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arXiv: 1208.1393

Inspire: 1126121

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