I QFT - Field operator commutation

[abivz]

TL;DR 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∂³(x-y)​

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

 

[Nugatory]

You will likely get better answers faster if you format your equation properly using Latex: https://www.physicsforums.com/help/latexhelp/

 

[abivz]

You will likely get better answers faster if you format your equation properly using Latex: https://www.physicsforums.com/help/latexhelp/

thank you! I'm new to this forum and was unsure if I could type my equations in LaTex, thanks :)

 

[PeterDonis]

It looks like the OP has re-posted the question in LaTeX in a new thread, so this one is closed to avoid duplication.