Standing waves on quantum graphs

A Kairzhan, D Noja, DE Pelinovsky - Journal of Physics A …, 2022 - iopscience.iop.org
We review evolutionary models on quantum graphs expressed by linear and nonlinear
partial differential equations. Existence and stability of the standing waves trapped on …

Sine-Gordon solitons in networks: Scattering and transmission at vertices

Z Sobirov, D Babajanov, D Matrasulov… - Europhysics …, 2016 - iopscience.iop.org
We consider the sine-Gordon equation on metric graphs with simple topologies and derive
vertex boundary conditions from the fundamental conservation laws together with …

[HTML][HTML] Transparent quantum graphs

JR Yusupov, KK Sabirov, M Ehrhardt, DU Matrasulov - Physics Letters A, 2019 - Elsevier
We consider quantum graphs with transparent branching points. To design such networks,
the concept of transparent boundary conditions is applied to the derivation of the vertex …

Josephson flux-flow oscillator: The microscopic tunneling approach

DR Gulevich, VP Koshelets, FV Kusmartsev - Physical Review B, 2017 - APS
We elaborate a theoretical description of large Josephson junctions which is based on
Werthamer's microscopic tunneling theory. The model naturally incorporates coupling of …

Spectral stability of shifted states on star graphs

A Kairzhan, DE Pelinovsky - Journal of Physics A: Mathematical …, 2018 - iopscience.iop.org
We consider the nonlinear Schrödinger (NLS) equation with the subcritical power
nonlinearity on a star graph consisting of N edges and a single vertex under generalized …

Dynamics of Dirac solitons in networks

KK Sabirov, DB Babajanov… - Journal of Physics A …, 2018 - iopscience.iop.org
We study dynamics of Dirac solitons in prototypical networks modeling them by the
nonlinear Dirac equation on metric graphs. Stationary soliton solutions of the nonlinear …

Transparent nonlinear networks

JR Yusupov, KK Sabirov, M Ehrhardt, DU Matrasulov - Physical Review E, 2019 - APS
We consider the reflectionless transport of solitons in networks. The system is modeled in
terms of the nonlinear Schrödinger equation on metric graphs, for which transparent …

[HTML][HTML] The stationary sine-Gordon equation on metric graphs: Exact analytical solutions for simple topologies

K Sabirov, S Rakhmanov, D Matrasulov, H Susanto - Physics Letters A, 2018 - Elsevier
We consider the stationary sine-Gordon equation on metric graphs with simple topologies.
Exact analytical solutions are obtained for different vertex boundary conditions. It is shown …

Study of the two‐dimensional sine‐Gordon equation arising in Josephson junctions using meshless finite point method

M Kamranian, M Dehghan… - International Journal of …, 2017 - Wiley Online Library
In this paper, the finite point method is discussed for solving the initial‐boundary value
problem associated with the sine‐Gordon equation in two‐dimensional domains arising in …

Kink-inhomogeneity interaction in the sine-Gordon model

J Gatlik, T Dobrowolski, PG Kevrekidis - Physical Review E, 2023 - APS
In the present study the interaction of a sine-Gordon kink with a localized inhomogeneity is
considered. In the absence of dissipation, the inhomogeneity considered is found to impose …