Relativistic Dissipative Hydrodynamic Description of the Quark-Gluon Plasma
This thesis presents theoretical and numerical studies on phenomenological description of the quark–gluon plasma (QGP), a many-body system of elementary particles.
The author formulates a causal theory of hydrodynamics for systems with net charges from the law of increasing entropy and a momentum expansion method. The derived equation results can be applied not only to collider physics, but also to the early universe and ultra-cold atoms.
The author also develops novel off-equilibrium hydrodynamic models for the longitudinal expansion of the QGP on the basis of these equations. Numerical estimations show that convection and entropy production during the hydrodynamic evolution are key to explaining excessive charged particle production, recently observed at the Large Hadron Collider. Furthermore, the analyses at finite baryon density indicate that the energy available for QGP production is larger than the amount conventionally assumed.
Provides a full second-order formulation of relativistic dissipative hydrodynamics with linear cross terms that satisfy Onsager reciprocal relationsShows the effects of shear viscosity, bulk viscosity and baryon diffusion found to be important in quantitative analyses of particle spectra from the expanding QGPNominated as an outstanding Ph.D. thesis by the University of Tokyo's Physics Department in 2012