hey guys!I really need help in getting from the real classical solution of the Klein Gordon equation to the expression of operators!(adsbygoogle = window.adsbygoogle || []).push({});

I start from:

[itex]\varphi(x) = \int \frac{d^3 k}{(2\pi)^3 2\omega} [a(\textbf{k}) e^{ikx} + a^{*}(\textbf{k}) e^{-ikx}][/itex]

and should arrive with

[itex]\int d^3 x \: e^{-ikx} \varphi(x) = \frac{1}{2\omega} a(\textbf{k}) + \frac{1}{2\omega} e^{2i\omega t}a(\textbf{k})[/itex]

then the rest is easy!just not very good with inverse trasformations! ^_^

thank you all!

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# Deriving expressions for creation/annihilation operator!

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