Mainz 2012 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 60: Schwerionenkollisionen und QCD Phasen

HK 60.8: Vortrag

Freitag, 23. März 2012, 12:45–13:00, P 5

Maximum entropy study of viscous coefficients in gauge theory plasmas — •Michael Haas — Institut fuer theoretische Physik, Universitaet Heidelberg

The applicability of laws of fluid dynamics to high energy gauge theory matter as the quark-gluon plasma placed the focus on the calculation of viscous coefficients. Via Kubo relations these dynamic quantities are related to the static spectral functions. A maximum entropy (ME) approach allows to find the spectral functions from imaginary-time correlation functions both at zero and finite temperature by inverting an integral transform. An important feature of ME is its independence on priori parametrizations of the spectral functions, by including the the broadest function space supported by the input data. Both accomplishments and future challenges will be discussed.