Characterization of initial fluctuations for the hydrodynamical description of heavy ion collisions
Event-by-event fluctuations in the initial conditions for a hydrodynamical description of heavy ion collisions are characterized. We propose a Bessel-Fourier decomposition with respect to the azimuthal angle, the radius in the transverse plane, and rapidity. This allows for a complete characterizati...
Gespeichert in:
| 1. Verfasser: | |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
10 October 2013
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| In: |
Physical review. C, Nuclear physics
Year: 2013, Jahrgang: 88, Heft: 4, Pages: 044906 |
| ISSN: | 1089-490X |
| DOI: | 10.1103/PhysRevC.88.044906 |
| Online-Zugang: | Verlag, Volltext: http://dx.doi.org/10.1103/PhysRevC.88.044906 Verlag, Volltext: https://link.aps.org/doi/10.1103/PhysRevC.88.044906 
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| Verfasserangaben: | Stefan Floerchinger and Urs Achim Wiedemann |
MARC
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| 520 | |a Event-by-event fluctuations in the initial conditions for a hydrodynamical description of heavy ion collisions are characterized. We propose a Bessel-Fourier decomposition with respect to the azimuthal angle, the radius in the transverse plane, and rapidity. This allows for a complete characterization of fluctuations in all hydrodynamical fields including energy density, pressure, fluid velocity, shear stress, and bulk viscous pressure. It has the advantage that fluctuations can be ordered with respect to their wavelength and that they can be propagated mode by mode within the hydrodynamical formalism. Event ensembles can then be characterized in terms of a functional probability distribution. For the event ensemble of a Monte Carlo Glauber model, we provide evidence that the latter is close to Gaussian form, thus allowing for a particularly simple characterization of the event distribution. | ||
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