Nonlinear diffusion of gluons
It is proposed to consider the fast thermalization of gluons in relativistic heavy-ion collisions as a diffusion process in momentum space. Closed-form analytical solutions of a nonlinear boson diffusion equation (NBDE) with constant drift and diffusion coefficients v, D and boundary conditions at t...
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
28 March 2022
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| In: |
Physica. A, Statistical mechanics and its applications
Year: 2022, Jahrgang: 597, Pages: 1-11 |
| ISSN: | 1873-2119 |
| DOI: | 10.1016/j.physa.2022.127299 |
| Online-Zugang: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1016/j.physa.2022.127299 Verlag, lizenzpflichtig, Volltext: https://www.sciencedirect.com/science/article/pii/S0378437122002485 
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| Verfasserangaben: | Georg Wolschin |
| Zusammenfassung: | It is proposed to consider the fast thermalization of gluons in relativistic heavy-ion collisions as a diffusion process in momentum space. Closed-form analytical solutions of a nonlinear boson diffusion equation (NBDE) with constant drift and diffusion coefficients v, D and boundary conditions at the singularity are derived. The time evolution towards local central temperatures T≲600 MeV through inelastic gluon scatterings in heavy-ion collisions is calculated for under- and overoccupied systems in the full momentum range. The results are consistent with QCD-based numerical calculations for gluon thermalization via inelastic gluon collisions. |
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| Beschreibung: | Gesehen am 15.09.2022 |
| Beschreibung: | Online Resource |
| ISSN: | 1873-2119 |
| DOI: | 10.1016/j.physa.2022.127299 |