[Wien] why we need to divide plasma frequency by root(2)?

[Dr. K. C. Bhamu]

>
>
> ---------------------case.injoint
> xx
> xx
> 1                                              >> correction
> 2.0740      2.0740      1.2640
> xx
> -----------------------------------
>
> were xx means no change in lines of case.inkram.
>
>
>
> At page numer  164 under section "8.11 KRAM (Kramers-Kronig
> transformation) in UG"
>
>
> *"For a metal, the Plasma-frequencies (intraband transitions) for up and
> dn should be added, but then divided by√2, before using x kram." *
>
> Does it mean that we need to add all three components and then divide by
> root(2) and put a single number [(2.074+2.074+1.264)/root(2)=3.88]
> instead of all three in case.injoint?
>
>
> kind regards
>
> Bhamu
>
>
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