The two particle interferometry method to determine the size of the emitting source after a heavy ion collision is extended. Following the extension of the method to spherical expansion dynamics, here we extend the method to rotating systems. It is shown that rotation of a cylindrically symmetric system leads to modifications, which can be perceived as spatial asymmetry by the "azimuthal HBT" method. We study an exact rotating and expanding solution of the fluid dynamical model of heavy ion reactions. We consider a source that is azimuthally symmetric in space around the axis of rotation, and discuss the features of the resulting two particle correlation function. This shows the azimuthal asymmetry arising from the rotation. We show that this asymmetry leads to results similar to those given by spatially asymmetric sources.Comment: 3 pages, 3 figures, submitted to PLB. arXiv admin note: text overlap with arXiv:1508.0188

In this work, we report on our computation results for the best value of the shear viscosity to entropy ratio of quark–gluon plasma produced in the relativistic Au–Au collisions at [Formula: see text][Formula: see text]GeV. Time evolution of heavy quarks distribution functions is calculated by solving the Fokker–Planck evolution equation using the new technique: Iterative Laplace transform method. We compute the drag and diffusion coefficients by considering the hard thermal loop corrections and also temperature dependence running strong coupling, up to complete interactions of leading order.

Energy loss of a non thermal distributed heavy fermion beam due to the interaction with an electron-positron-photon plasma is investigated. Time evolution of the beam distribution function is calculated by solving the Fokker-Planck equation using the Iterative Laplace Transform Method. All possible interactions between the heavy fermions and plasma constituents up to the first order of coupling constant of interaction are considered in calculations. It is shown that not only the beam and plasma temperatures evolve in time but also the non thermal parameter of the distribution function changes and the distribution of beam particles tends toward a thermal distribution.

The "Iterative Laplace Transform Method" is used to solve the Fokker-Plank equation for finding the time evolution of the heavy quarks distribution functions such as charm and bottom in quark gluon plasma. These solutions will lead us to calculation of nuclear suppression factor R AA . The results have good agreement with available experiment data from the PHENIX collaboration.