[HTML][HTML] Mathematical modeling of time fractional reaction–diffusion systems

V Gafiychuk, B Datsko, V Meleshko - Journal of Computational and Applied …, 2008 - Elsevier
We study a fractional reaction–diffusion system with two types of variables: activator and
inhibitor. The interactions between components are modeled by cubical nonlinearity …

Nonlinearity-induced transition in the nonlinear Su-Schrieffer-Heeger model and a nonlinear higher-order topological system

M Ezawa - Physical Review B, 2021 - APS
We study the topological physics in nonlinear Schrödinger systems on lattices. We employ
the quench dynamics to explore the phase diagram, where a pulse is given to a lattice point …

Continuous limit of discrete systems with long-range interaction

VE Tarasov - Journal of Physics A: Mathematical and General, 2006 - iopscience.iop.org
Discrete systems with long-range interactions are considered. Continuous medium models
as continuous limit of discrete chain system are defined. Long-range interactions of chain …

Nonlinearity-induced chiral solitonlike edge states in Chern systems

M Ezawa - Physical Review B, 2022 - APS
We study the nonlinear effect on topological edge states by including a nonlinear term to a
Chern insulator which has two chiral edge states with opposite chiralities. We explore …

Numerical simulation of the nonlinear dynamics of harmonically driven Riesz-fractional extensions of the Fermi–Pasta–Ulam chains

JE Macías-Díaz - Communications in Nonlinear Science and Numerical …, 2018 - Elsevier
In this work, we introduce a spatially discrete model that is a modification of the well-known α-
Fermi–Pasta–Ulam chain with damping. The system is perturbed at one end by a harmonic …

Conservation laws and Hamilton's equations for systems with long-range interaction and memory

VE Tarasov, GM Zaslavsky - Communications in Nonlinear Science and …, 2008 - Elsevier
Using the fact that extremum of variation of generalized action can lead to the fractional
dynamics in the case of systems with long-range interaction and long-term memory function …

Fractional Schrödinger dynamics and decoherence

K Kirkpatrick, Y Zhang - Physica D: Nonlinear Phenomena, 2016 - Elsevier
We study the dynamics of the Schrödinger equation with a fractional Laplacian (− Δ) α, and
the decoherence of the solution is observed. Analytically, we obtain equations of motion for …

[HTML][HTML] Exact discretization of Schrödinger equation

VE Tarasov - Physics Letters A, 2016 - Elsevier
There are different approaches to discretization of the Schrödinger equation with some
approximations. In this paper we derive a discrete equation that can be considered as exact …

Nonlinear excitations in magnetic lattices with long-range interactions

M Molerón, C Chong, AJ Martínez… - New Journal of …, 2019 - iopscience.iop.org
We study—experimentally, theoretically, and numerically—nonlinear excitations in lattices of
magnets with long-range interactions. We examine breather solutions, which are spatially …

Dynamics of the chain of forced oscillators with long-range interaction: From synchronization to chaos

GM Zaslavsky, M Edelman, VE Tarasov - Chaos: An Interdisciplinary …, 2007 - pubs.aip.org
We consider a chain of nonlinear oscillators with long-range interaction of the type 1∕ l 1+
α⁠, where l is a distance between oscillators and 0< α< 2⁠. In the continuous limit, the …