How can I solve a non homogeneous diff equation numerically?

I'm trying to solve a quantum harmonic oscillator numerically and I followed Matlab steps to crack the equation, however, it doesn't work. Any other idea for another method or where the mistake could be? the equation is d2psi/dx2=(constant-x^2)*psi Thanks for advanced
syms y(x)
k=23; m=9.1093821545*1e-31; w=sqrt(k/m);hb=(6.6260695729*1e-34)/(2*pi);E0=hb*w*.5;
[V] = odeToVectorField(diff(y, 2) == (hb*w*.5-.5*k*x.^2).*y);
x1=-sqrt(hb*w/k);
x2=-x1;
M = matlabFunction(V,'vars',{x,'Y'});
[m,n] = ode45(M,[x1 x2],[0. 0.]);

 Réponse acceptée

k=23;
m=9.1093821545*1e-31;
w=sqrt(k/m);
hb=(6.6260695729*1e-34)/(2*pi);
E0=hb*w*.5;
M=@(x,y)[y(2);(hb*w*.5-.5*k*x^2)*y(1)];
x1=-sqrt(hb*w/k);
x2=-x1;
[m,n] = ode45(M,[x1 x2],[0.; 0.]);
Result will be that y(1) and y(2) are identically zero.
Best wishes
Torsten.

2 commentaires

any hint to solve ? d2y/dx2=(constant-x.^2)*y thanks
But this is the code to solve the equation
d2y/dx2=(constant-x.^2)*y
y(1) will be y, y(2) will be dy/dx.
Best wishes
Torsten.

Connectez-vous pour commenter.

Plus de réponses (0)

Catégories

En savoir plus sur Quantum Mechanics dans Centre d'aide et File Exchange

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by