Please teach me this:(adsbygoogle = window.adsbygoogle || []).push({});

Why they say QM is a pillar of QFT?Is it correct it is because of the operator of field obeys the Dirac or Klein-Gordon equation of QM?Is the value of fields(not operator of fields) being the wave function in QM?I do not understand why we can consider QFT including QM.

Thank you very much for your kind helping.

**Physics Forums | Science Articles, Homework Help, Discussion**

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Why saying Quantum Mechanics is pillar of QFT?

**Physics Forums | Science Articles, Homework Help, Discussion**