Kinetic freeze-out, particle spectra and harmonic flow coefficients from mode-by-mode hydrodynamics
Abstract
The kinetic freeze-out for the hydrodynamical description of relativistic heavy ion collisions is discussed using a background-fluctuation splitting of the hydrodynamical fields. For a single event, the particle spectrum, or its logarithm, can be written as the sum of background part that is symmetric with respect to azimuthal rotations and longitudinal boosts and a part containing the contribution of fluctuations or deviations from the background. Using a complete orthonormal basis to characterize the initial state allows one to write the double differential harmonic flow coefficients determined by the two-particle correlation method as matrix expressions involving the initial fluid correlations. We discuss the use of these expressions for a mode-by-mode analysis of fluctuating initial conditions in heavy ion collisions.
Keywords
Cite
@article{arxiv.1311.7613,
title = {Kinetic freeze-out, particle spectra and harmonic flow coefficients from mode-by-mode hydrodynamics},
author = {Stefan Floerchinger and Urs Achim Wiedemann},
journal= {arXiv preprint arXiv:1311.7613},
year = {2014}
}
Comments
20 pages, 4 figures, published version