Early time behavior of spatial and momentum anisotropies in kinetic theory across different Knudsen numbers

Borghini N, Borrell Martinez M, Roch H (2022)
arXiv:2201.13294.

Preprint | Englisch
 
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Abstract / Bemerkung
We investigate the early time development of the anisotropic transverse flow and spatial eccentricities of a fireball with various particle-based transport approaches using a fixed initial condition. In numerical simulations ranging from the quasi-collisionless case to the hydrodynamic regime, we find that the onset of vnv_nvn​ and of related measures of anisotropic flow can be described with a simple power-law ansatz, with an exponent that depends on the amount of rescatterings in the system. In the few-rescatterings regime we perform semi-analytical calculations, based on a systematic expansion in powers of time and the cross section, which can reproduce the numerical findings.
Erscheinungsjahr
2022
Zeitschriftentitel
arXiv:2201.13294
Page URI
https://pub.uni-bielefeld.de/record/2963719

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Borghini N, Borrell Martinez M, Roch H. Early time behavior of spatial and momentum anisotropies in kinetic theory across different Knudsen numbers. arXiv:2201.13294. 2022.
Borghini, N., Borrell Martinez, M., & Roch, H. (2022). Early time behavior of spatial and momentum anisotropies in kinetic theory across different Knudsen numbers. arXiv:2201.13294
Borghini, N., Borrell Martinez, M., and Roch, H. (2022). Early time behavior of spatial and momentum anisotropies in kinetic theory across different Knudsen numbers. arXiv:2201.13294.
Borghini, N., Borrell Martinez, M., & Roch, H., 2022. Early time behavior of spatial and momentum anisotropies in kinetic theory across different Knudsen numbers. arXiv:2201.13294.
N. Borghini, M. Borrell Martinez, and H. Roch, “Early time behavior of spatial and momentum anisotropies in kinetic theory across different Knudsen numbers”, arXiv:2201.13294, 2022.
Borghini, N., Borrell Martinez, M., Roch, H.: Early time behavior of spatial and momentum anisotropies in kinetic theory across different Knudsen numbers. arXiv:2201.13294. (2022).
Borghini, Nicolas, Borrell Martinez, Marc, and Roch, Hendrik. “Early time behavior of spatial and momentum anisotropies in kinetic theory across different Knudsen numbers”. arXiv:2201.13294 (2022).

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