i always have asked myself this question ..Feynmann and others got the nobel prize for quantizaying the electromagnetism..i have read about it and it seems it was a difficult task..but why not try this way .take the lagrangian of electromagnetism and take the hamiltonian to be H=E+B now we now E=-dA/dt and B=rotA so we could quantizy the hamiltonian and get the wave functional F(A) with(adsbygoogle = window.adsbygoogle || []).push({});

HF(A)=EF(A) what is easier...then why use renormaliztion and all that?..in electromagnetism can the Hamiltonian description presented above describe quantum electormagnetism?..then why qed?..

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

Join Physics Forums Today!

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

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

# A question

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