A friendly review of absorbing boundary conditions and perfectly matched layers for classical and relativistic quantum waves equations

X Antoine, E Lorin, Q Tang - Molecular Physics, 2017 - Taylor & Francis
The aim of this paper is to describe concisely the recent theoretical and numerical
developments concerningabsorbing boundary conditions and perfectly matched layers for …

Numerical methods and comparison for the Dirac equation in the nonrelativistic limit regime

W Bao, Y Cai, X Jia, Q Tang - Journal of Scientific Computing, 2017 - Springer
We analyze rigorously error estimates and compare numerically spatial/temporal resolution
of various numerical methods for the discretization of the Dirac equation in the nonrelativistic …

[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 …

Uniformly accurate nested Picard iterative integrators for the Dirac equation in the nonrelativistic limit regime

Y Cai, Y Wang - SIAM Journal on Numerical Analysis, 2019 - SIAM
This paper is devoted to the construction and analysis of uniformly accurate nested Picard
iterative integrators (NPI) for the Dirac equation in the nonrelativistic limit regime. In this …

Dirac particles in transparent quantum graphs: Tunable transport of relativistic quasiparticles in branched structures

JR Yusupov, KK Sabirov, QU Asadov, M Ehrhardt… - Physical Review E, 2020 - APS
We consider the dynamics of relativistic spin-half particles in quantum graphs with
transparent branching points. The system is modeled by combining the quantum graph …

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 …

Pseudospectral computational methods for the time-dependent Dirac equation in static curved spaces

X Antoine, F Fillion-Gourdeau, E Lorin… - Journal of Computational …, 2020 - Elsevier
Pseudospectral numerical schemes for solving the Dirac equation in general static curved
space are derived using a new pseudodifferential representation of the Dirac equation along …

A uniformly accurate multiscale time integrator pseudospectral method for the Dirac equation in the nonrelativistic limit regime

W Bao, Y Cai, X Jia, Q Tang - SIAM Journal on Numerical Analysis, 2016 - SIAM
We propose and rigourously analyze a multiscale time integrator Fourier pseudospectral
(MTI-FP) method for the (linear) Dirac equation with a dimensionless parameter ε∈(0,1 …

A fourth-order compact time-splitting Fourier pseudospectral method for the Dirac equation

W Bao, J Yin - Research in the Mathematical Sciences, 2019 - Springer
We propose a new fourth-order compact time-splitting (S_ 4c S 4 c) Fourier pseudospectral
method for the Dirac equation by splitting the Dirac equation into two parts together with …

Computational performance of simple and efficient sequential and parallel Dirac equation solvers

X Antoine, E Lorin - Computer Physics Communications, 2017 - Elsevier
This paper is dedicated to the study of the computational performance of basic and efficient
pseudo-spectral methods (Braun et al.(1999), Grant (2006)[1], Mocken and Keitel (2004)[2] …