Evolution of non-stationary pulses in a cold magnetized quark-gluon plasma
Article
Article Title | Evolution of non-stationary pulses in a cold magnetized quark-gluon plasma |
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ERA Journal ID | 100 |
Article Category | Article |
Authors | Fogaca, D. A. (Author), Fariello, R. (Author), Navarra, F. S. (Author) and Stepanyants, Y. A. (Author) |
Journal Title | Communication on Nonlinear Sciences and Numerical Simulation |
Communications in Nonlinear Science and Numerical Simulation | |
Journal Citation | 83 |
Article Number | 105144 |
Number of Pages | 12 |
Year | 2020 |
Place of Publication | Netherlands |
ISSN | 1007-5704 |
Digital Object Identifier (DOI) | https://doi.org/10.1016/j.cnsns.2019.105144 |
Web Address (URL) | https://www.sciencedirect.com/science/article/pii/S1007570419304630 |
Abstract | We study weakly nonlinear wave perturbations propagating in a cold nonrelativistic and magnetized ideal quark-gluon plasma. We show that such perturbations can be described by the Ostrovsky equation. The derivation of this equation is presented for the baryon den- sity perturbations. Then we show that the generalized nonlinear Schrödinger (NLS) equa- tion can be derived from the Ostrovsky equation for the description of quasi-harmonic wave trains. This equation is modulational stable for the wave number k < k_m and unstable for k > k_m , where k_m is the wave number where the group velocity has a maximum. We study numerically the dynamics of initial wave packets with the different carrier wave numbers and demonstrate that depending on the initial parameters they can evolve either into the NLS envelope solitons or into dispersive wave trains. |
Keywords | Ostrovsky equation; quantum chromodynamics; quark-gluon plasma; envelope solitons |
ANZSRC Field of Research 2020 | 510601. Nuclear physics |
490109. Theoretical and applied mechanics | |
490199. Applied mathematics not elsewhere classified | |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | University of Sao Paulo, Brazil |
School of Agricultural, Computational and Environmental Sciences | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q5883/evolution-of-non-stationary-pulses-in-a-cold-magnetized-quark-gluon-plasma
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