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Homework Statement
Give the number of states (energy of the state smaller than E<0) [tex]\Phi(E)[/tex] of a spinless particle with mass [tex]m[/tex] in the central potential [tex]V(\vec{r})=-\frac{a}{\left|\vec{r}\right|}[/tex].
Homework Equations
The Attempt at a Solution
Hi,
the hamiltonian of this problem is given by
[tex]\mathcal{H}=\frac{p^2}{2m}-\frac{a}{r}[/tex]
with [tex]|\vec{r}|=r[/tex]
I know, that the energy eigenvalues of such an potential can be expressed by:
[tex]E_n = -\frac{E_0}{n^2}[/tex]
where E_0 is the ground state energy.
But how do I count the number of states? Isn't the number of states that are smaller than a specific E<0 infinite?
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