111 citations · 384 across the 18 of their papers we have counts for
18 papers
Extension of the Uhlenbeck-Ford Model with an Attraction
J. M. J. van Leeuwen
The Uhlenbeck-Ford model for soft repulsion, which has only a repulsive interaction, is extended by inclusion of an attraction. This extension still allows an analytical evaluation…
Efficient simulation of semiflexible polymers
Debabrata Panja, Gerard T. Barkema, J. M. J. van Leeuwen
Using a recently developed bead-spring model for semiflexible polymers that takes into account their natural extensibility, we report an efficient algorithm to simulate the dynamic…
Semiflexible Polymer Dynamics with a Bead-Spring Model
Gerard T. Barkema, Debabrata Panja, J. M. J. van Leeuwen
We study the dynamical properties of semiflexible polymers with a recently introduced bead-spring model. We focus on double-stranded DNA. The two parameters of the model, and…
Tumbling of a rigid rod in a shear flow
J. M. J. van Leeuwen, H. W. J. Blöte
The tumbling of a rigid rod in a shear flow is analyzed in the high viscosity limit. Following Burgers, the Master Equation is derived for the probability distribution of the orien…
A model for the dynamics of extensible semiflexible polymers
Gerard T. Barkema, J. M. J. van Leeuwen
We present a model for semiflexible polymers in Hamiltonian formulation which interpolates between a Rouse chain and worm-like chain. Both models are realized as limits for the par…
Structural modes of a polymer in the repton model
Gerard T. Barkema, Debabrata Panja, J. M. J. van Leeuwen
Using extensive computer simulations, the behavior of the structural modes --- more precisely, the eigenmodes of a phantom Rouse polymer --- are characterized for a polymer in the…
Stochastic lattice models for the dynamics of linear polymers
J. M. J. van Leeuwen, Andrzej Drzewinski
Linear polymers are represented as chains of hopping reptons and their motion is described as a stochastic process on a lattice. This admittedly crude approximation still catches e…
Persistence in Practice
J. M. J. van Leeuwen, V. W. A. de Villeneuve, H. N. W. Lekkerkerker
We present a scheme to accurately calculate the persistence probabilities on sequences of heights above a level from the measured points of the height-height correlat…
Force correlations in the q-model for general q-distributions
Jacco H. Snoeijer, J. M. J. van Leeuwen
We study force correlations in the q-model for granular media at infinite depth, for general q-distributions. We show that there are no 2-point force correlations as long as q-valu…
Reptation in the Rubinstein-Duke model: the influence of end-reptons dynamics
Enrico Carlon, Andrzej Drzewinski, J. M. J. van Leeuwen
We investigate the Rubinstein-Duke model for polymer reptation by means of density-matrix renormalization group techniques both in absence and presence of a driving field. In the f…
Force Relaxation in the q-model for Granular Media
Jacco H. Snoeijer, J. M. J. van Leeuwen
We study the relaxation of force distributions in the q-model, assuming a uniform q-distribution. We show that "diffusion of correlations" makes this relaxation very slow. On a d-d…
Crossover behavior for long reptating polymers
Enrico Carlon, Andrzej Drzewinski, J. M. J. van Leeuwen
We analyze the Rubinstein-Duke model for polymer reptation by means of density matrix renormalization techniques. We find a crossover behavior for a series of quantities as functio…
Incorporation of Density Matrix Wavefunctions in Monte Carlo Simulations: Application to the Frustrated Heisenberg Model
M. S. L. du Croo de Jongh, J. M. J. van Leeuwen, W. van Saarloos
We combine the Density Matrix Technique (DMRG) with Green Function Monte Carlo (GFMC) simulations. The DMRG is most successful in 1-dimensional systems and can only be extended to…
The critical behaviour of the 2D Ising model in Transverse Field; a Density Matrix Renormalization calculation
M. S. L. du Croo de Jongh, J. M. J. van Leeuwen
We have adjusted the Density Matrix Renormalization method to handle two dimensional systems of limited width. The key ingredient for this extension is the incorporation of symmetr…
Spin Stiffness in the Hubbard model
J. M. J. van Leeuwen, M. S. L. du Croo de Jongh, P. J. H. Denteneer
The spin stiffness of the repulsive Hubbard model that occurs in the hydrodynamic theory of antiferromagnetic spin waves is shown to be the same as the thermodynamicall…
Proof for an upper bound in fixed-node Monte Carlo for lattice fermions
D. F. B. ten Haaf, H. J. M. van Bemmel, J. M. J. van Leeuwen +2
We justify a recently proposed prescription for performing Green Function Monte Carlo calculations on systems of lattice fermions, by which one is able to avoid the sign problem. W…
Low-Temperature Behavior of the Large-U Hubbard Model from High-Temperature Expansions
D. F. B. ten Haaf, P. W. Brouwer, P. J. H. Denteneer +1
We derive low-temperature properties of the large-U Hubbard model in two and three dimensions from exact series-expansion results for high temperatures. Convergence problems and li…
Pressure and density of vacancies in solid He
Dirk Jan Bukman, J. M. J. van Leeuwen
Crystals of He contain vacancies that move around by a quantum mechanical hopping process. The density and pressure of these vacancies can be experimentally studied. The accura…