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Fluid dynamics for the anisotropically expanding quark-gluon plasma

Bazow, Dennis P.
http://rave.ohiolink.edu/etdc/view?acc_num=osu1493056954338129

Abstract Details

2017, Doctor of Philosophy, Ohio State University, Physics.
Local momentum anisotropies are large in the early stages of the quark-gluon plasma created in relativistic heavy-ion collisions, due to the extreme difference in the initial longitudinal and transverse expansion rates. In such situations, fluid dynamics derived from an expansion around an isotropic local equilibrium state is bound to break down. Instead, we resum the effects of the slowest nonhydrodynamic degree of freedom (associated with the deviation from momentum isotropy) and include it at leading order, defining a local anisotropic quasi-equilibrium state, thereby treating the longitudinal/transverse pressure anisotropy nonperturbatively. Perturbative transport equations are then derived to deal with the remaining residual momentum anisotropies. This procedure yields a complete transient effective theory called viscous anisotropic hydrodynamics. We then show that the anisotropic hydrodynamic approach, especially after perturbative inclusion of all residual viscous terms, dramatically outperforms viscous hydrodynamics in several simplified situations for which exact solutions exist but which share with realistic expansion scenarios the problem of large dissipative currents. Simulations of the full three-dimensional dynamics of the anisotropic quark-gluon plasma are then presented.
Ulrich Heinz (Advisor)
Michael Lisa (Committee Member)
Yuri Kovchegov (Committee Member)
Junko Shigemitsu (Committee Member)
197 p.
Physics
Relativistic fluid dynamics; Quark-gluon plasma; Anisotropic dynamics; Viscous hydrodynamics; Boltzmann equation; GPU; CUDA; Parallel computing

Recommended Citations

Citations

  • Bazow, D. P. (2017). Fluid dynamics for the anisotropically expanding quark-gluon plasma [Doctoral dissertation, Ohio State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=osu1493056954338129

    APA Style (7th edition)

  • Bazow, Dennis. Fluid dynamics for the anisotropically expanding quark-gluon plasma. 2017. Ohio State University, Doctoral dissertation. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=osu1493056954338129.

    MLA Style (8th edition)

  • Bazow, Dennis. "Fluid dynamics for the anisotropically expanding quark-gluon plasma." Doctoral dissertation, Ohio State University, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=osu1493056954338129

    Chicago Manual of Style (17th edition)

osu1493056954338129
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This open access ETD is published by The Ohio State University and OhioLINK.