Class ImprovedSchrodinger

java.lang.Object
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  +--Schrodinger
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        +--ImprovedSchrodinger

class ImprovedSchrodinger

extends Schrodinger

A version of the Schrodinger class where all solution data is automatically cached, and the potential function may be changed more easily.

Some unnecessary generalisation has been removed to improve performance. For instance, it is assumed that the potential function does not change as a function of time.

Field Summary

protected SolnCache

cache A cache of the values of the potential function

Fields inherited from class Schrodinger

_2m_over_h_bar_sq, DEFAULT_ENERGY, E, energy, firstValue, H, M, pot

Constructor Summary

ImprovedSchrodinger(Function f)
Creates a new Schrodinger solver

Method Summary

void	setPotentialFunction(Function f)
void	solve(double x, double h, double[] vals) Requests that the supplied array be filled with solution data.

Methods inherited from class Schrodinger

getEnergy, setEnergy

Methods inherited from class java.lang.Object

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

Field Detail

cache

protected SolnCache cache

A cache of the values of the potential function

Constructor Detail

ImprovedSchrodinger

public ImprovedSchrodinger(Function f)

Creates a new Schrodinger solver

Parameters:

fn - The potential function

Method Detail

solve

public void solve(double x,
                  double h,
                  double[] vals)

Description copied from interface: Solvable

Requests that the supplied array be filled with solution data. The nth element of the array should be the solution at x = x0 + step*n.

Overrides:

solve in class Schrodinger

Tags copied from interface: Solvable

Parameters:

x0 - The initial x-value

step - The increment to be applied to x0

vals - The array which will hold the solution data

setPotentialFunction

public void setPotentialFunction(Function f)

Overrides:

setPotentialFunction in class Schrodinger