- #1
Niles
- 1,866
- 0
Hi guys
When working with operators in second quantization, I always imagine
[tex]
c^\dagger_ic_j
[/tex]
as denoting the "good old" matrix element [itex]\left\langle {i}
\mathrel{\left | {\vphantom {i j}}
\right. \kern-\nulldelimiterspace}
{j} \right\rangle [/itex]. But how should I interpret an operator given by e.g.
[tex]
c^\dagger_ic_j^\dagger?
[/tex]
When working with operators in second quantization, I always imagine
[tex]
c^\dagger_ic_j
[/tex]
as denoting the "good old" matrix element [itex]\left\langle {i}
\mathrel{\left | {\vphantom {i j}}
\right. \kern-\nulldelimiterspace}
{j} \right\rangle [/itex]. But how should I interpret an operator given by e.g.
[tex]
c^\dagger_ic_j^\dagger?
[/tex]