Year: 2013
Type: article
Abstract: We use the AdS/CFT conjecture to investigate the thermalization of large-${N}_{c}$ $\mathcal{N}=4$ super Yang-Mills plasma in the limit of large but finite 't Hooft coupling. On the gravity side, we supplement the type IIB supergravity action by the full set of $\mathcal{O}({\ensuremath{\alpha}}^{\ensuremath{'}3})$ operators, which enables us to derive $\mathcal{O}({\ensuremath{\lambda}}^{\ensuremath{-}3/2})$ corrections to the emission spectrum of prompt photons in one model of holographic thermalization. Decreasing the coupling strength from the $\ensuremath{\lambda}=\ensuremath{\infty}$ limit, we observe a qualitative change in the way the photon spectral density approaches its thermal limit as a function of the photon energy. We interpret this behavior as a sign of the thermalization pattern of the plasma shifting from top-down towards bottom-up.
Source: Physical Review Letters
Institutions: TU Wien, Bielefeld University
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W1863345766