172 citations · 882 across the 21 of their papers we have counts for
11 papers · 1 filter
On Dynamics and Optimal Number of Replicas in Parallel Tempering Simulations
Walter Nadler, Ulrich H. E. Hansmann
We study the dynamics of parallel tempering simulations, also known as the replica exchange technique, which has become the method of choice for simulation of proteins and other co…
Side-chain and backbone ordering in Homopolymers
Yanjie Wei, Walter Nadler, Ulrich H. E. Hansmann
In order to study the relation between backbone and side chain ordering in proteins, we have performed multicanonical simulations of deka-peptide chains with various side groups. G…
Network Analysis of the State Space of Discrete Dynamical Systems
Amer Shreim, Peter Grassberger, Walter Nadler +3
We study networks representing the dynamics of elementary 1-d cellular automata (CA) on finite lattices. We analyze scaling behaviors of both local and global network properties as…
Generalized Ensemble and Tempering Simulations: A Unified View
Walter Nadler, Ulrich H. E. Hansmann
From the underlying Master equations we derive one-dimensional stochastic processes that describe generalized ensemble simulations as well as tempering (simulated and parallel) sim…
Violating conformal invariance: Two-dimensional clusters grafted to wedges, cones, and branch points of Riemann surfaces
Hsiao-Ping Hsu, Walter Nadler, Peter Grassberger
We present simulations of 2-d site animals on square and triangular lattices in non-trivial geomeLattice animals are one of the few critical models in statistical mechanics violati…
Simulations of lattice animals and trees
Hsiao-Ping Hsu, Walter Nadler, Peter Grassberger
The scaling behaviour of randomly branched polymers in a good solvent is studied in two to nine dimensions, using as microscopic models lattice animals and lattice trees on simple…
A Growth-based Optimization Algorithm for Lattice Heteropolymers
Hsiao-Ping Hsu, Vishal Mehra, Walter Nadler +1
An improved version of the pruned-enriched-Rosenbluth method (PERM) is proposed and tested on finding lowest energy states in simple models of lattice heteropolymers. It is found t…
Growth Algorithms for Lattice Heteropolymers at Low Temperatures
Hsiao-Ping Hsu, Vishal Mehra, Walter Nadler +1
Two improved versions of the pruned-enriched-Rosenbluth method (PERM) are proposed and tested on simple models of lattice heteropolymers. Both are found to outperform not only the…
Spin Dephasing in the Extended Strong Collision Approximation
Wolfgang R. Bauer, Walter Nadler
For Markovian dynamics of field fluctuations we present here an extended strong collision approximation, thereby putting our previous strong collision approach (Phys. Rev. Lett. 83…
"Go with the winners"-Simulations
P. Grassberger, W. Nadler
We describe a general strategy for sampling configurations from a given (Gibbs-Boltzmann or other) distribution. It is {\it not} based on the Metropolis concept of establishing a M…
Testing a new Monte Carlo Algorithm for Protein Folding
Ugo Bastolla, Helge Frauenkron, Erwin Gerstner +2
We demonstrate that the recently proposed pruned-enriched Rosenbluth method PERM (P. Grassberger, Phys. Rev. E, in press (1997)) leads to extremely efficient algorithms for the fol…