Holographic dilepton production in a thermalizing plasma
Abstract
We use the AdS/CFT correspondence to determine the outofequilibrium production rate of dileptons at rest in strongly coupled {N} = 4 Super YangMills plasma. Thermalization is achieved via the gravitational collapse of a thin shell of matter in AdS_{5} space and the subsequent formation of a black hole, which we describe in a quasistatic approximation. Prior to thermalization, the dilepton spectral function is observed to oscillate as a function of frequency, but the amplitude of the oscillations decreases when thermal equilibrium is approached. At the same time, we follow the flow of the quasinormal spectrum of the corresponding U(1) vector field towards its equilibrium limit.
 Publication:

Journal of High Energy Physics
 Pub Date:
 July 2012
 DOI:
 10.1007/JHEP07(2012)094
 arXiv:
 arXiv:1205.2998
 Bibcode:
 2012JHEP...07..094B
 Keywords:

 QuarkGluon Plasma;
 AdSCFT Correspondence;
 High Energy Physics  Phenomenology;
 High Energy Physics  Theory;
 Nuclear Theory
 EPrint:
 21 pages, 7 figures. v2: Version accepted for publication in JHEP