24 citations · 60 across the 9 of their papers we have counts for
9 papers
Exact quantum dynamics of Fermi--Hubbard systems using the Gaussian phase-space representation with diffusion gauges
F Rousse, M Fasi, A Dmytryshyn +3
We use the Gaussian Phase-Space Representation to solve the real-time dynamic of interacting fermions in 1D, 2D, and 3D systems. The method is exact up to a spiking point, which re…
Simulations of quantum dynamics with fermionic phase-space representations using numerical matrix factorizations as stochastic gauges
F Rousse, M Fasi, A Dmytryshyn +2
The Gaussian phase-space representation can be used to implement quantum dynamics for fermionic particles numerically. To improve numerical results, we explore the use of dynamical…
Dynamical representations of constrained multicomponent nonlinear Schrödinger equations in arbitrary dimensions
M Gulliksson, M Ogren
We present new approaches for solving constrained multicomponent nonlinear Schrödinger equations in arbitrary dimensions. The idea is to introduce an artificial time and solve an e…
A numerical damped oscillator approach to constrained Schrödinger equations
M. Ogren, M. Gulliksson
This article explains and illustrates the use of a set of coupled dynamical equations, second order in a fictitious time, which converges to solutions of stationary Schrödinger equ…
Numerical simulations of NMR relaxation in chalk using local Robin boundary conditions
M. Ogren, D. Jha, S. Dobberschutz +5
The interpretation of nuclear magnetic resonance (NMR) data is of interest in a number of fields. In Ögren [Eur. Phys. J. B (2014) 87: 255] local boundary conditions for random wal…
Damped second order flow applied to image denoising
George Baravdish, Olof Svensson, Mårten Gulliksson +1
In this paper, we introduce a new image denoising model: the damped flow (DF), which is a second order nonlinear evolution equation associated with a class of energy functionals of…
Excitation spectrum of a mixture of two Bose gases confined in a ring potential with interaction asymmetry
A. Roussou, J. Smyrnakis, M. Magiropoulos +5
We study the rotational properties of a two-component Bose-Einstein condensed gas of distinguishable atoms which are confined in a ring potential using both the mean-field approxim…
Numerical solution of the stationary multicomponent nonlinear Schrödinger equation with a constraint on the angular momentum
P. Sandin, M. Ogren, M. Gulliksson
We formulate a damped oscillating particle method to solve the stationary nonlinear Schrödinger equation (NLSE). The ground state solutions are found by a converging damped oscilla…
The Dynamical Functional Particle Method
Mårten Gulliksson, Sverker Edvardsson, Andreas Lind
We present a new algorithm which is named the Dynamical Functional Particle Method, DFPM. It is based on the idea of formulating a finite dimensional damped dynamical system whose…