Recent content by JVM

So I'm sorry if I was unclear before, but my main question was about the link between the different formulations of Noethers theorem in physics and mathematics, or if they are actually not equivalent and it is simply the case of using the same terms in different contexts. Especially because in...

Since QFT is simply a perturbation theory it means that we don't know what happens in these intermediate stages of a process, and although we use these intermediate processes, it is definitely what actually happens. The problem is that we don't have an exact description, QFT at this moment is...

Hey, Thanks for the input. I have seen how to find the Euler-Lagrange equations for fields (there might be several different approaches), by using second order jet bundles, and indeed sections. It is like follows. Suppose that the Lagrangian L \begin{equation} L \in C^{\inf}(J^1 \pi)...

Thank you for your reply. And thank you for the link to the discussion on stackexchange. I think that what you said, and what is said in the stackexchange discussion, that Lie group actions are needed, is indeed the formulation that is usually used in physics. But the theorem I described I...

Hello, First of all, I'm sorry for the long post. I've tried to make it self consistent, but some prior knowledge will be assumed in both physics and differential geometry. Also maybe some math will be displayed wrongly, it's my first time here... In physics people usually describe Noether's...