# What is an anisotropic harmonic oscillator?

I can't find any explanation of it anywhere in the internet. How is it different from an isotropic harmonic oscillator?

In 3D, the harmonic oscillator potential can be characterized by $$V(x) = \frac 1 2 m(\omega_x^2x^2 + \omega_y^2y^2 + \omega_z^2z^2).$$ If $$\omega_x = \omega_y = \omega_z$$, then the potential is spherically symmetric and we say that it is isotropic. Anisotropic simply means the opposite.