Package etomica.potential

Class P1HardPeriodic

java.lang.Object

etomica.potential.Potential

etomica.potential.Potential1

etomica.potential.P1HardPeriodic

All Implemented Interfaces:

IPotential, IPotentialAtomic, PotentialHard

public class P1HardPeriodic
extends Potential1
implements PotentialHard

pseudo-potential for a "collision" time to update colliders for periodic boundaries

Nested Class Summary

Nested classes/interfaces inherited from class etomica.potential.Potential1

Potential1.Intramolecular

Field Summary

Fields

Modifier and Type	Field	Description
protected double	sigma

Fields inherited from class etomica.potential.Potential

space

Fields inherited from class etomica.potential.Potential1

boundary

Constructor Summary

Constructors

Constructor	Description
P1HardPeriodic(Space space)	Returns an instance of P1HardPeriodic with sigma = NaN.
P1HardPeriodic(Space space, double sigma)	Returns an instance of P1HardPeriodic with the given value of sigma (the maximum distance between two atoms where they interact)

Method Summary

Modifier and Type	Method	Description
void	bump(IAtomList a, double falseTime)	Performs no action.
double	collisionTime(IAtomList a, double falseTime)	Computes the time of collision of the given atom(s) with the hard potential, assuming no intervening collisions.
double	energy(IAtomList a)	Returns zero.
double	energyChange()	Returns zero.
double	getSgima()
double	lastCollisionVirial()	Returns zero.
Tensor	lastCollisionVirialTensor()	Returns null.
void	setSigma(double newSigma)

Methods inherited from interface etomica.potential.IPotential

getRange, nBody, setBox

Methods inherited from class java.lang.Object

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

Methods inherited from class etomica.potential.Potential

nBody

Methods inherited from class etomica.potential.Potential1

getRange, setBox

Field Detail

sigma

protected double sigma

Constructor Detail

P1HardPeriodic

public P1HardPeriodic(Space space)

Returns an instance of P1HardPeriodic with sigma = NaN. call setSigma to set the value you want.

P1HardPeriodic

public P1HardPeriodic(Space space,
                      double sigma)

Returns an instance of P1HardPeriodic with the given value of sigma (the maximum distance between two atoms where they interact)

Method Detail

energy

public double energy(IAtomList a)

Returns zero.

Specified by:

energy in interface IPotentialAtomic

Specified by:

energy in class Potential

energyChange

public double energyChange()

Returns zero.

Specified by:

energyChange in interface PotentialHard

collisionTime

public double collisionTime(IAtomList a,
                            double falseTime)

Description copied from interface: PotentialHard

Computes the time of collision of the given atom(s) with the hard potential, assuming no intervening collisions. Usually assumes free-flight between collisions.

Specified by:

collisionTime in interface PotentialHard

setSigma

public void setSigma(double newSigma)

getSgima

public double getSgima()

bump

public void bump(IAtomList a,
                 double falseTime)

Performs no action.

Specified by:

bump in interface PotentialHard

lastCollisionVirial

public double lastCollisionVirial()

Returns zero.

Specified by:

lastCollisionVirial in interface PotentialHard

Returns:

double virial value

lastCollisionVirialTensor

public Tensor lastCollisionVirialTensor()

Returns null.

Specified by:

lastCollisionVirialTensor in interface PotentialHard

Returns:

Tensor