Title

A novel variational approach to pulsating solitons in the cubic-quintic Ginzburg-Landau equation

Authors

Authors

S. C. Mancas;S. R. Choudhury

Comments

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Abbreviated Journal Title

Theor. Math. Phys.

Keywords

variational formalism; complex Ginzburg-Landau equation; pulsating; soliton; MODULATED AMPLITUDE WAVES; TIME-PERIODIC SOLUTIONS; DISSIPATIVE SYSTEMS; INSTABILITIES; FRONTS; PULSES; SINKS; Physics, Multidisciplinary; Physics, Mathematical

Abstract

Comprehensive numerical simulations of pulse solutions of the cubic-quintic Ginzburg-Landau equation (CGLE) reveal various intriguing and entirely novel classes of solutions. In particular, there are five new classes of pulse or solitary wave solutions, i.e., pulsating, creeping, snake, erupting, and chaotic solitons that are not stationary in time. They are spatially confined pulse-type structures whose envelopes exhibit complicated temporal dynamics. The numerical simulations also reveal very interesting bifurcation sequences of these pulses as the CGLE parameters are varied. We address the issues of central interest in this area, i.e., the conditions for the occurrence of the five categories of dissipative solitons and also the dependence of both their shape and their stability on the various CGLE parameters, i.e., the nonlinearity, dispersion, linear and nonlinear gain, loss, and spectral filtering. Our predictions for the variation of the soliton amplitudes, widths, and periods with the CGLE parameters agree with the simulation results. We here present detailed results for the pulsating solitary waves. Their regimes of occurrence, bifurcations, and the parameter dependences of the amplitudes, widths, and periods agree with the simulation results. We will address snakes and chaotic solitons in subsequent papers. This overall approach fails to address only the dissipative solitons in one class, i.e., the exploding or erupting solitons.

Journal Title

Theoretical and Mathematical Physics

Volume

152

Issue/Number

2

Publication Date

1-1-2007

Document Type

Article; Proceedings Paper

Language

English

First Page

1160

Last Page

1172

WOS Identifier

WOS:000249211500011

ISSN

0040-5779

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