Modulational Instability and Quantum Local Modes in Easy-Axis Ferromagnetic Chains with the Dzyaloshinskii-Moriya Interaction
Sign Up to like & getrecommendations! Published in 2017 at "International Journal of Theoretical Physics"
DOI: 10.1007/s10773-017-3384-9
Abstract: A theoretical work on modulational instability and quantum local breather modes in a one-dimensional easy-axis Heisenberg ferromagnetic spin lattice with the Dzyaloshinskii-Moriya interaction is completed in the Hartree approximation. By means of the discrete modulational… read more here.
Keywords: dzyaloshinskii moriya; moriya interaction; modulational instability; easy axis ... See more keywords
Discrete breathers and modulational instability in a discrete $$\varvec{\phi ^{4}}$$ϕ4 nonlinear lattice with next-nearest-neighbor couplings
Sign Up to like & getrecommendations! Published in 2017 at "Nonlinear Dynamics"
DOI: 10.1007/s11071-017-3386-4
Abstract: The properties of discrete breathers and modulational instability in a discrete $$\phi ^{4}$$ϕ4 nonlinear lattice which includes the next-nearest-neighbor coupling interaction are investigated analytically. By using the method of multiple scales combined with a quasi-discreteness… read more here.
Keywords: discrete breathers; nearest neighbor; modulational instability; next nearest ... See more keywords
Modulational instability in addition to discrete breathers in 2D quantum ultracold atoms loaded in optical lattices
Sign Up to like & getrecommendations! Published in 2019 at "Nonlinear Dynamics"
DOI: 10.1007/s11071-019-05295-w
Abstract: The modulational instability associated with discrete breathers in 2D quantum ultracold atoms is studied by using the Glauber’s coherent state combined with a semi-discrete approximation and multiple-scale methods. The linear stability analysis exhibits an intriguing… read more here.
Keywords: quantum ultracold; discrete breathers; modulational instability; breathers quantum ... See more keywords
A nonlinear Schrödinger equation for gravity–capillary water waves on arbitrary depth with constant vorticity. Part 1
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Fluid Mechanics"
DOI: 10.1017/jfm.2018.627
Abstract: A nonlinear Schrödinger equation for the envelope of two-dimensional gravity–capillary waves propagating at the free surface of a vertically sheared current of constant vorticity is derived. In this paper we extend to gravity–capillary wave trains… read more here.
Keywords: vorticity; modulational instability; gravity capillary; gravity ... See more keywords
Modulational instability of ion-acoustic waves in magnetoplasma with pressure of relativistic electrons
Sign Up to like & getrecommendations! Published in 2017 at "Physics of Plasmas"
DOI: 10.1063/1.4984247
Abstract: In this research, the modulation of a weakly three-dimensional electrostatic ion-acoustic wave (IAW) is studied in dense magnetoplasma consisting of relativistic degenerate inertialess electrons and nondegenerate inertial thermal ions. It is assumed that the degeneracy… read more here.
Keywords: ion acoustic; modulational instability; ion; equation ... See more keywords
Modulational instability of electrostatic waves in a magnetized dusty plasma with kappa distributed electrons
Sign Up to like & getrecommendations! Published in 2017 at "Physics of Plasmas"
DOI: 10.1063/1.4994262
Abstract: The modulational instability of dust-ion acoustic wave (DIAW) and dust-ion cyclotron wave (DICW) is investigated in a magnetized plasma containing static dust particles. The static dust particles can be positively or negatively charged, while ions… read more here.
Keywords: plasma; modulational instability; magnetized dusty; dusty plasma ... See more keywords
Modulational instability and rogue waves in one-dimensional nonlinear acoustic metamaterials: case of diatomic model
Sign Up to like & getrecommendations! Published in 2021 at "Physica Scripta"
DOI: 10.1088/1402-4896/ac42ea
Abstract: In this paper, by means of the expanded Taylor series and Lindstedt-Poincaré perturbation methods, the coupled nonlinear Schrödinger equations (CNLSE) modeling the propagation of acoustic waves in acoustic metamaterial is obtained. Using these equations, the… read more here.
Keywords: acoustic metamaterials; waves one; modulational instability; rogue waves ... See more keywords
Band relaxation triggered by modulational instability in topological photonic lattices
Sign Up to like & getrecommendations! Published in 2023 at "Physica Scripta"
DOI: 10.1088/1402-4896/accabb
Abstract: Modulational instability in topological photonic lattices enables the selective population of energy bands and generation of steady-state wavefields with well-defined topological invariants. This provides a way to measure bulk topological invariants, which determine the number… read more here.
Keywords: modulational instability; instability topological; photonic lattices; topological photonic ... See more keywords
Modulational instability in PT -symmetric Bragg grating structures with saturable nonlinearity
Sign Up to like & getrecommendations! Published in 2023 at "Physical Review A"
DOI: 10.1103/physreva.107.053510
Abstract: We investigate the nontrivial characteristics of modulational instability (MI) in a system of Bragg gratings with saturable nonlinearity. We also introduce an equal amount of gain and loss into the existing system which gives rise… read more here.
Keywords: system; dispersion; saturable nonlinearity; modulational instability ... See more keywords
Modulational instability in large-amplitude linear laser wakefields.
Sign Up to like & getrecommendations! Published in 2023 at "Physical review. E"
DOI: 10.1103/physreve.107.l023201
Abstract: We investigate the growth of ion density perturbations in large-amplitude linear laser wakefields via two-dimensional particle-in-cell simulations. Growth rates and wave numbers are found to be consistent with a longitudinal strong-field modulational instability. We examine… read more here.
Keywords: amplitude linear; laser wakefields; modulational instability; instability ... See more keywords
Soliton excitations on a continuous-wave background in the modulational instability regime with fourth-order effects.
Sign Up to like & getrecommendations! Published in 2017 at "Physical Review E"
DOI: 10.1103/physreve.95.042212
Abstract: We study the correspondence between modulational instability and types of fundamental nonlinear excitation in a nonlinear fiber with both third-order and fourth-order effects. Some soliton excitations are obtained in the modulational instability regime which have… read more here.
Keywords: modulational instability; instability regime; order effects; instability ... See more keywords