Package etomica.spin.heisenberg

Class MCMoveSpinCluster

java.lang.Object

etomica.integrator.mcmove.MCMove

etomica.integrator.mcmove.MCMoveBox

etomica.spin.heisenberg.MCMoveSpinCluster

public class MCMoveSpinCluster
extends MCMoveBox

Cluster move as described by Wolff in PRL v62 361 (1989)

Field Summary

Fields

Modifier and Type	Field	Description
protected AtomIteratorArrayListSimple	atomIterator
protected AtomArrayList	atomPairs
protected java.util.HashSet<IAtom>	clusterAtoms
protected IntegratorMC	integratorMC
protected double	J
protected java.util.HashSet<IAtom>	jNeighbors
protected NeighborIteratorSite	neighbors
protected IRandom	random
protected Vector	reflectionVector
protected Space	space

Fields inherited from class etomica.integrator.mcmove.MCMove

moveTracker, nominalFrequency, potential

Fields inherited from class etomica.integrator.mcmove.MCMoveBox

box, perParticleFrequency

Constructor Summary

Constructors

Constructor	Description
MCMoveSpinCluster(Space space, IRandom random, PotentialMasterSite potentialMaster, IntegratorMC integratorMC, double J)

Method Summary

Modifier and Type	Method	Description
void	acceptNotify()	Method called by IntegratorMC in the event that the most recent trial is accepted.
AtomIterator	affectedAtoms()
boolean	doTrial()	Method to perform trial move.
double	energyChange()
double	getChi(double temperature)	Chi is the parameter within standard Metropolis Monte Carlo.
void	rejectNotify()	Method called by IntegratorMC in the event that the most recent trial move is rejected.
void	setBox(Box box)	Sets the box on which this move acts.

Methods inherited from class etomica.integrator.mcmove.MCMove

getNominalFrequency, getTracker, setTracker

Methods inherited from class etomica.integrator.mcmove.MCMoveBox

affectedAtoms, energyChange, getBox, isNominallyPerParticleFrequency, toString

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

space

protected final Space space

random

protected final IRandom random

clusterAtoms

protected final java.util.HashSet<IAtom> clusterAtoms

jNeighbors

protected final java.util.HashSet<IAtom> jNeighbors

reflectionVector

protected final Vector reflectionVector

atomPairs

protected final AtomArrayList atomPairs

integratorMC

protected final IntegratorMC integratorMC

neighbors

protected final NeighborIteratorSite neighbors

J

protected double J

atomIterator

protected final AtomIteratorArrayListSimple atomIterator

Constructor Detail

MCMoveSpinCluster

public MCMoveSpinCluster(Space space,
                         IRandom random,
                         PotentialMasterSite potentialMaster,
                         IntegratorMC integratorMC,
                         double J)

Method Detail

affectedAtoms

public AtomIterator affectedAtoms()

Specified by:

affectedAtoms in class MCMoveBox

energyChange

public double energyChange()

Specified by:

energyChange in class MCMoveBox

doTrial

public boolean doTrial()

Description copied from class: MCMove

Method to perform trial move. Returns false if the trial could not be attempted, for example if there were no molecules in the box and the trial is designed to displace an atom; returns true otherwise.

Specified by:

doTrial in class MCMove

setBox

public void setBox(Box box)

Description copied from class: MCMoveBox

Sets the box on which this move acts. The box itself can be changed via this method, if desired.

Overrides:

setBox in class MCMoveBox

getChi

public double getChi(double temperature)

Description copied from class: MCMove

Chi is the parameter within standard Metropolis Monte Carlo. The probability of accepting the move is given by min(1,chi).

Specified by:

getChi in class MCMove

Parameters:

temperature - used to compute chi

Returns:

chi

acceptNotify

public void acceptNotify()

Description copied from class: MCMove

Method called by IntegratorMC in the event that the most recent trial is accepted.

Specified by:

acceptNotify in class MCMove

rejectNotify

public void rejectNotify()

Description copied from class: MCMove

Method called by IntegratorMC in the event that the most recent trial move is rejected. This method should cause the system to be restored to the condition before the most recent call to doTrial.

Specified by:

rejectNotify in class MCMove