Contact Information
Department of Physics525 Northwestern Avenue
West Lafayette, IN
47907-2036
Map and Directions
Telephone:
(765) 494-2970
Fax:
(765) 494-0706
Gabriel Denicol
McGill University
"Shear and bulk viscosity effects on event by event relativistic fluid dynamics"
 |
Wednesday April 24, 2013
2:00pm PHYS 298
Nowadays, relativistic dissipative fluid dynamics is the most common tool used to describe the space-time evolution of the quark-gluon plasma (QGP) created in ultrarelativistic heavy-ion collisions. It has been realized that, for a proper comparison to experimental data and a reliable extraction of viscosity, fluid-dynamical calculations have to be performed on an event-by-event basis. Therefore, fluid dynamics should not only be able to predict the correct event-averaged , but also their distributions. In this work, we investigate the event-by-event distribution of the initial-state eccentricities e_{n}, and show how they correlate with the event-by-event distribution of the Fourier coefficients v_{n}. We demonstrate that the event-by-event distributions of the v_{n}, and not only their average values, are promising observables to gain information about the initial state of the fluid-dynamical evolution and the transport properties of the hot and dense, strongly interacting matter created in heavy-ion collisions. We also investigate the effect of bulk viscosity on heavy ion observables. In most calculations bulk viscosity is not taken into account and is thought to have little effect on heavy ion observables. In this talk we show that this is not the case and that bulk viscosity can have a large effect on flow anisotropies and transverse momentum spectra.