- #1
john0909
- 3
- 0
regarding the density of states:
how I GET THE FOLLOWING EQUALITY?
[tex]\langle E_n\mid \delta(E-\widehat{H}) \mid E_n \rangle = \sum_n \delta(E-E_n)
[/tex]
how I GET THE FOLLOWING EQUALITY?
[tex]\langle E_n\mid \delta(E-\widehat{H}) \mid E_n \rangle = \sum_n \delta(E-E_n)
[/tex]
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