Hydrodynamics and Thermodynamics in High Energy Physics

Dear Colleagues,

In collisions of relativistic heavy ions, a new form of matter, the strongly interacting Quark–Gluon Plasma (sQGP) or quark matter is formed due to the extremely high temperature, density, and pressure. Ordinary hadrons, leptons, and photons then emerge from the sQGP and can be measured after the collisions. It is believed that the sQGP is similar to the form of matter that filled the Universe in the first few microseconds. The sQGP becomes locally thermalized early, and equations of hydro- and thermodynamics can be utilized to describe its time evolution. Perfect hydrodynamics is a theory without dissipation and internal scale, and many successful predictions about the sQGP have emerged from models based on it. Analytic solutions and numerical simulations are both useful in understanding space–time evolution of the system between its initial and final state. Today, dissipative hydrodynamics is also successfully applied to describe the sQGP, and there are interesting developments about the equations of relativistic hydrodynamics at various orders of dissipation. Meanwhile, thermodynamical properties at different stages of this evolution are important for understanding the sQGP. In this Special Issue, we invite papers that investigate analytic and numerical aspects of hydrodynamics and thermodynamics in high energy collisions and utilize these to describe the sQGP and its observables.

Prof. Fu-Hu Liu
Dr. Máté Csanád
Guest Editors

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