24 citations · 114 across the 15 of their papers we have counts for
15 papers
Coarse-Graining Agent-Based Models of Bacterial Infections
Wesley J. M. Ridgway, Raymond J. Spiteri
Agent-based models (ABMs) provide a natural framework for representing cell-level rules and spatial heterogeneity in bacterial infections, but their computational cost limits their…
Beyond domain alignment: Revealing the effect of intrinsic magnetic order on electrochemical water splitting
Emma van der Minne, Lucas Korol, Lidewij M. A. Krakers +14
To reach a long term viable green hydrogen economy, rational design of active oxygen evolution reaction (OER) catalysts is critical. An important hurdle in this reaction originates…
Physiological accuracy in simulating refractory cardiac tissue: the volume-averaged bidomain model vs. the cell-based EMI model
Joyce Reimer, Sebastián A. Domínguez-Rivera, Joakim Sundnes +1
The refractory period of cardiac tissue can be quantitatively described using strength-interval (SI) curves. The information captured in SI curves is pertinent to the design of ant…
Beyond Strang: A practical assessment of some second-order 3-splitting methods
Raymond J. Spiteri, Arash Tavassoli, Siqi Wei +1
Operator splitting is a popular divide-and-conquer strategy for solving differential equations. Typically, the right-hand side of the differential equation is split into a number o…
The electron cyclotron drift instability: a comparison of particle-in-cell and continuum Vlasov simulations
Arash Tavassoli, Mina Papahn Zadeh, Andrei Smolyakov +2
The linear and nonlinear characteristics of the electron cyclotron drift instability (ECDI) have been studied through the particle-in-cell (PIC) and continuum Vlasov simulation met…
Fractional-Step Runge--Kutta Methods: Representation and Linear Stability Analysis
Raymond J. Spiteri, Siqi Wei
Fractional-step methods are a popular and powerful divide-and-conquer approach for the numerical solution of differential equations. When the integrators of the fractional steps ar…
Backward waves in the nonlinear regime of the Buneman instability
Arash Tavassoli, Magdi Shoucri, Andrei Smolyakov +2
Observation of low- and high-frequency backward waves in the nonlinear regime of the Buneman instability is reported. Intense low-frequency backward waves propagating in the direct…
The role of noise in PIC and Vlasov simulations of the Buneman instability
Arash Tavassoli, Oleksandr Chapurin, Marilyn Jimenez +7
The effects of noise in particle-in-cell (PIC) and Vlasov simulations of the Buneman instability in unmagnetized plasmas are studied. It is found that, in the regime of low drift v…
Nonlinear regimes of the electron cyclotron drift instability in Vlasov simulations
Arash Tavassoli, Andrei Smolyakov, Magdi Shoucri +1
We report on a novel investigation of the nonlinear regime of the electron cyclotron drift instability, using a grid-based Vlasov simulation. It is shown that the instability occur…
Inherent Structure Landscape of Hard Spheres Confined to Narrow Cylindrical Channels
Mahdi Zarif, Raymond J. Spiteri, Richard K. Bowles
The inherent structure landscape for a system of hard spheres confined to a hard cylindrical channel, such that spheres can only contact their first and second neighbours, is studi…
On theoretical upper limits for valid timesteps of implicit ODE methods
K. R. Green, G. W. Patrick, R. J. Spiteri
Implicit methods for the numerical solution of initial-value problems may admit multiple solutions at any given time step. Accordingly, their nonlinear solvers may converge to any…
The effect of soft repulsive interactions on the diffusion of particles in quasi-one-dimensional channels: A hopping time approach
Sheida Ahmadi, Marina Schmidt, Raymond J. Spiteri +1
Fluids confined to quasi-one-dimensional channels exhibit a dynamic crossover from single file diffusion to normal diffusion as the channel becomes wide enough for particles to hop…
Quantum control for high-fidelity multi-qubit gates
Raymond J. Spiteri, Marina Schmidt, Joydip Ghosh +2
Quantum control for error correction is critical for the practical use of quantum computers. We address quantum optimal control for single-shot multi-qubit gates by framing as a fe…
A Transition State Theory for Calculating Hopping Times and Diffusion in Highly Confined Fluids
Surajith N. Wanasundara, Raymond J. Spiteri, Richard K. Bowles
Monte Carlo simulation is used to study the dynamical crossover from single file diffusion to normal diffusion in fluids confined to narrow channels. We show that the long time dif…
Revisionist Integral Deferred Correction with Adaptive Stepsize Control
Andrew J. Christlieb, Colin B. Macdonald, Benjamin W. Ong +1
Adaptive stepsize control is a critical feature for the robust and efficient numerical solution of initial-value problems in ordinary differential equations. In this paper, we show…