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## Summary:

- Help with getting the dirac delta function from the field operator commutation

Hi everyone, I'm taking a QFT course this semester and we're studying from the Otto Nachtman: Texts and Monographs in Physics textbook, today our teacher asked us to get to the equation:

[Φ(x,t),∂/∂tΦ(y,t)]=iZ∂

But I am unsure of how to get to this, does anyone have any advice or any textbooks or notes I could check? Thanks in Advance^{3}(x-y)