arXiv subjects

Yong Hwan Lee

Publications and source records attributed to Yong Hwan Lee.

3 recordsLinked to original sources

arXiv2019

A Cluster Controller for Transition Matrix Calculations

We demonstrate that a temperature schedule for single-spin flip transition matrix calculations can be simply and rapidly generated by monitoring the average size of the Wolff clusters at a set of discrete temperatures. Optimizing this schedule yields a potentially interesting quantity related to the fractal structure of Ising clusters. We also introduce a technique in which the transition matrix is constructed at a sequence of discrete temperatures at which Wolff cluster reversals are alternated with certain series of single-spin flip steps. The single spin-flip transitions are then employed to construct a single transition matrix.

cond-mat.stat-mech↗

arXiv2018

Transition Matrix Cluster Algorithms

We demonstrate that a series of procedures for increasing the efficiency of transition matrix calculations can be realized by integrating the standard single-spin flip transition matrix method with global cluster flipping techniques. Our calculations employ a simple and accurate method based on detailed balance for computing the density of states from the Ising model transition matrix.

cond-mat.stat-mech↗

arXiv2016

Dynamic Canonical and Microcanonical Transition Matrix Analyses of Critical Behavior

By monitoring the sampling of states with different magnetizations in transition matrix procedures a family of accurate and easily implemented techniques are constructed that automatically control the variation of the temperature or energy as the calculation proceeds. The accuracy of the method for a single Markov chain exceeds that of standard transition matrix procedures that accumulate elements from multiple chains.

cond-mat.stat-mech↗