scholarly journals The continuous classical Heisenberg ferromagnet equation with in-plane asymptotic conditions. II. IST and closed-form soliton solutions

2018 ◽  
Vol 68 (1) ◽  
pp. 163-178 ◽  
Author(s):  
F. Demontis ◽  
G. Ortenzi ◽  
M. Sommacal ◽  
C. van der Mee
2006 ◽  
Vol 18 (03) ◽  
pp. 255-283
Author(s):  
HUI DENG ◽  
BO-YU HOU ◽  
KANG-JIE SHI ◽  
ZHAN-YING YANG ◽  
RUI-HONG YUE ◽  
...  

In this paper, we construct a closed form of projectors on the integral noncommutative orbifold T2/Z6 in terms of elliptic functions by GHS (Gopakumar, Headrick and Spradlin) construction. Thereafter, we give a general solution of projectors on T2/Z6 and T2/Z3 with minimal trace and continuous reduced matrix M(k,q0). The projectors constructed by us possess symmetry and manifestly covariant forms under Z6 rotation. Since projectors correspond to the soliton solutions of field theory on the noncommutative orbifold, we thus present a series of corresponding manifestly covariant soliton solutions.


2020 ◽  
Vol 34 (30) ◽  
pp. 2050291 ◽  
Author(s):  
Usman Younas ◽  
Aly R. Seadawy ◽  
M. Younis ◽  
S. T. R. Rizvi

This paper investigates the new solitons and closed form solutions to [Formula: see text] dimensional resonant nonlinear Schrödinger equation (RNLSE) that explains the behavior of waves with the effect of group velocity dispersion and resonant nonlinearities in the optical fiber. The soliton solutions in single and combined forms like dark, singular, and dark-singular in mixed form are extracted by means of two innovative integration norms namely extended sinh-Gordon equation expansion and [Formula: see text]-expansion function methods. Moreover, kink and closed form solutions are also observed under different constraint conditions. By choosing the suitable selection of the parameters, three dimensional, two dimensional, and contour plots are sketched. The obtained outcomes show that the applied computational strategies are direct, efficient, concise and can be implemented in more complex phenomena with the assistant of symbolic computations.


2021 ◽  
Vol 9 (1) ◽  
pp. 11
Author(s):  
Faisal Hawlader ◽  
Nahida Akter

Tzitzeica Dodd Bullough (TDB) equation appears in the field of quantum field theory and nonlinear optics. In this article, we extracted abundant new soliton solutions with free choice of arbitrary parameters to the Tzitzeica-Dodd-Bullough (TDB) equation through the three separate methods such as the enhanced -expansion method, the improved -expansion method and the -expansion method by means of the wave transformation and the Painleve property. In these schemes, we formally derived some new closed form soliton solutions of the TDB equation through with symbolic computation package Maple. Soliton solutions are expressed by hyperbolic function, trigonometric function and rational function. The attained solutions are verified by symbolic computation software Maple 17. The attained solutions can be demonstrated by two-dimensional (2D) and three-dimensional (3D) graphs. Finally, it can be concluded that the adopted methods are very effective and well-suited to find new closed-form soliton solutions to the other nonlinear evaluation equations (NLEEs) with integer or fractional order. 


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