1 citations · 1 across the 8 of their papers we have counts for
9 papers
Residual-Based Time Discretization on Nonlinear Approximation Manifolds: Analysis and Gaussian Applications
Eddy de Leon, Caroline Lasser
We study time-discrete parametric approximations of evolution equations in Hilbert spaces based on residual minimization. The solution is represented by a parametrized ansatz belon…
Meshfree versus grid-based Schrödinger solvers for modeling the interactions between free-electron wave packets and light
Mitja Funk, Sebastian Merk, Caroline Lasser +2
The interaction of free-electron wave packets with electromagnetic fields provides a powerful route toward coherent electron control, enabling the generation of energy combs, momen…
Structure-Preserving Integration for Magnetic Gaussian Wave Packet Dynamics
Sebastian Merk, Caroline Lasser
We develop structure-preserving time integration schemes for Gaussian wave packet dynamics associated with the magnetic Schrödinger equation. The variational Dirac--Frenkel formula…
An equivalence of moment closure and nonlinear variational approximation of the Fokker-Planck equation for dilute polymeric flow
Caroline Lasser, Stephan B. Lunowa, Barbara Wohlmuth
We establish the equivalence between a classical moment closure and a nonlinear variational approximation of the Fokker-Planck equation for dilute polymeric flow in the linearized…
Vibronic spectra at nonzero temperatures from Herman-Kluk coherence thermofield dynamics
Fabian Kröninger, Caroline Lasser, Jiří J. L. Vaníček
We combine the semiclassical Herman--Kluk approximation with the coherence thermofield dynamics in order to evaluate vibrationally resolved electronic spectra at nonzero temperatur…
Time-integration of Gaussian variational approximation for the magnetic Schrödinger equation
Malik Scheifinger, Kurt Busch, Marlis Hochbruck +1
In the present paper we consider the semiclassical magnetic Schrödinger equation, which describes the dynamics of charged particles under the influence of a electro-magnetic field.…
Sampling strategies for expectation values within the Herman--Kluk approximation
Fabian Kröninger, Caroline Lasser, Jiri J. L. Vanicek
When computing quantum-mechanical observables, the ``curse of dimensionality'' limits the naive approach that uses the quantum-mechanical wavefunction. The semiclassical Herman--Kl…
Regularized dynamical parametric approximation
Michael Feischl, Caroline Lasser, Christian Lubich +1
This paper studies the numerical approximation of evolution equations by nonlinear parametrizations $u(t)=Φ(\param(t))$ with time-dependent parameters $\param(t)$, which are to be…
FSSH-2: Fewest Switches Surface Hopping with robust switching probability
Leonardo Araujo, Caroline Lasser, Burkhard Schmidt
This study introduces the FSSH-2 scheme, a redefined and numerically stable adiabatic Fewest Switches Surface Hopping (FSSH) method for mixed quantum-classical dynamics. It reformu…