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Rosa edited section_Density_of_states_In__.tex
over 8 years ago
Commit id: 41ce2ab57b5afe6200e9fd3a53e01329ee149473
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diff --git a/section_Density_of_states_In__.tex b/section_Density_of_states_In__.tex
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...
We first compute the solution to the time-independent Schrödinger equation for a semi-infinte chain. Our results should coincide with the previous in this report. Let us assume a quite general solution for $\mathcal{H}_W$:
\begin{equation}
|\Psi\rangle =
\sum_{i=1}^\{i=\infty} \sum_{i=1}^{i=\infty} c_{i}
|i> |i\rangle
\end{equation}
Then
\begin{equation}
...
\end{equation}
or
\begin{equation}
H_{W}
\left(\sum_{i=1}^\{i=\infty} \left(\sum_{i=1}^{i=\infty} c_{i} |i>\right) =E \left(\sum_{i=1}^\{i=\infty} c_{i} |i>\right)
\end{equation}
We project onto a state $|m>$ and use the fact that $\langle m | j\rangle=\delta_{m,j}$, the states are an orthornormal basis. Then, we obtain the following
\begin{equation}
...