Computing quantum dynamics in the semiclassical regime
C Lasser, C Lubich - Acta Numerica, 2020 - cambridge.org
The semiclassically scaled time-dependent multi-particle Schrödinger equation describes,
inter alia, quantum dynamics of nuclei in a molecule. It poses the combined computational …
inter alia, quantum dynamics of nuclei in a molecule. It poses the combined computational …
Computational methods for the dynamics of the nonlinear Schrödinger/Gross–Pitaevskii equations
In this paper, we begin with the nonlinear Schrödinger/Gross–Pitaevskii equation
(NLSE/GPE) for modeling Bose–Einstein condensation (BEC) and nonlinear optics as well …
(NLSE/GPE) for modeling Bose–Einstein condensation (BEC) and nonlinear optics as well …
Time complexity analysis of quantum algorithms via linear representations for nonlinear ordinary and partial differential equations
We construct quantum algorithms to compute the solution and/or physical observables of
nonlinear ordinary differential equations (ODEs) and nonlinear Hamilton-Jacobi equations …
nonlinear ordinary differential equations (ODEs) and nonlinear Hamilton-Jacobi equations …
Asymptotic-preserving schemes for multiscale physical problems
S ** - Acta Numerica, 2022 - cambridge.org
We present the asymptotic transitions from microscopic to macroscopic physics, their
computational challenges and the asymptotic-preserving (AP) strategies to compute …
computational challenges and the asymptotic-preserving (AP) strategies to compute …
Numerical study of fractional nonlinear Schrödinger equations
Using a Fourier spectral method, we provide a detailed numerical investigation of dispersive
Schrödinger-type equations involving a fractional Laplacian in an one-dimensional case. By …
Schrödinger-type equations involving a fractional Laplacian in an one-dimensional case. By …
A μ-mode integrator for solving evolution equations in Kronecker form
In this paper, we propose a μ-mode integrator for computing the solution of stiff evolution
equations. The integrator is based on a d-dimensional splitting approach and uses exact …
equations. The integrator is based on a d-dimensional splitting approach and uses exact …
Effective approximation for the semiclassical Schrödinger equation
The computation of the semiclassical Schrödinger equation presents major challenges
because of the presence of a small parameter. Assuming periodic boundary conditions, the …
because of the presence of a small parameter. Assuming periodic boundary conditions, the …