- #1
PRB147
- 127
- 0
Ask for Help: Is this operator reasonable in physics?
Is this kind of the operator is reasonable in physical sense?
[tex]$\sum\limits_{\bf k_x,k_y} \alpha k_x c^\dag_{k_x,k_y}c_{k_x,k_y}$[/tex]
where [tex] $\alpha$ [/tex] is contant, [tex] k_x , k_y [/tex] is wavevector
along the x and y direction.
Is this kind of the operator is reasonable in physical sense?
[tex]$\sum\limits_{\bf k_x,k_y} \alpha k_x c^\dag_{k_x,k_y}c_{k_x,k_y}$[/tex]
where [tex] $\alpha$ [/tex] is contant, [tex] k_x , k_y [/tex] is wavevector
along the x and y direction.
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