Effects of gluon damping rate on the viscosity coefficient of the quark-gluon plasma at finite chemical potential

By considering the Debye screening and damping rate of gluons, the viscosity coefficient of the quark-gluon plasma was evaluated via real-time finite temperature QCD in the relaxation time approximation at finite temperature and chemical potential . The results show that both the damping rate and the chemical potential cause considerable enhancements to the viscosity coefficient of hot dense quark-gluon plasma.Comment: Latex, 18 pages plus three figure

The photon production and collective flows from magnetic induced fusion and splitting in early stage of high energy nuclear collision

We present an event-by-event study of photon production in the early stage of high energy nuclear collisions, where the system is dominant by highly occupied of gluons. The photons are produced through the gluon fusion and splitting processes when strong magnetic field is included. We study the spectra and collective flows of the photons and show their dependence on transverse momentum $q_{T}$. It is found that the photons from the boost invariant evolving glasma provide visible enhancement on spectrum and obvious contribution on $v_{2}$ of total the direct photons in large $q_{T}$ region. The results, by weighting on top of parton-hadron-string dynamics (PHSD) model, agree even better with experiment measurements in Au-Au 20\%-40\% centrality collisions at $\sqrt{s_{NN}}=200$GeV.Comment: 8 pages, 6 figure

Uncertainty analysis of environmental loads response for fixed offshore platform in climate change condition

Peer Reviewe