Numerical Simulation of Thermal Noise in Heavy Ion Collisions

30th Winter Workshop on Nuclear Dynamics

Young, C.^1 ; Kapusta, J.I.^2 ; Gale, C.^3 ; Jeon, S.^3 ; Schenke, B.^4

School of Physics and Astronomy, 116 Church Street S.E., Minneapolis

MN

55455, United States^1

School of Physics and Astronomy, University of Minnesota, Minneapolis

MN

55455, United States^2

Department of Physics, McGill University, 3600 rue University, Montreal

QC

H3A 2T8, Canada^3

Physics Department, Bldg. 510A, Brookhaven National Laboratory, Upton

NY

11973, United States^4

关键词: Energy density;    Event-by-event fluctuations;    Heavy ion collision;    Independent measurement;    Non-trivial;    Time-scales;    Two particle correlation;    Viscous fluids;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/535/1/012034/pdf
DOI  :  10.1088/1742-6596/535/1/012034

来源: IOP

【 摘 要 】

Thermal noise is present in any viscous fluid, making the simulation of relativistic noise in heavy ion collisions a necessity. It is likely possible to use it to make an independent measurement of viscosity in heavy ion collisions. The size, energy densities, and time scales of the collisions determine the relative importance of thermal noise. This causes a non-trivial contribution to two-particle correlations as well as event-by-event fluctuations in observables.