Analysis of Energy Eigen value in Complex Ginzburg-Landau Equation

作者:Gao, Ji-Hua*; Xiao, Qi; Xie, Ling-Ling; Yang, Hai-Tao
来源:Communications in Theoretical Physics, 2017, 67(6): 717-722.
DOI:10.1088/0253-6102/67/6/717

摘要

In this paper, we consider the two-dimensional complex GinzburgLandau equation (CGLE) as the spatiotemporal model, and an expression of energy eigenvalue is derived by using the phase-amplitude representation and the basic ideas from quantum mechanics. By numerical simulation, we find the energy eigenvalue in the CGLE system can be divided into two parts, corresponding to spiral wave and bulk oscillation. The energy eigenvalue of spiral wave is positive, which shows that it propagates outwardly; while the energy eigenvalue of spiral wave is negative, which shows that it propagates inwardly. There is a necessary condition for generating a spiral wave that the energy eigenvalue of spiral wave is greater than bulk oscillation. A wave with larger energy eigenvalue dominates when it competes with another wave with smaller energy eigenvalue in the space of the CGLE system. At the end of this study, a tentative discussion of the relationship between wave propagation and energy transmission is given.

全文