Recent content by mmcf

Alright, thanks. That seems to be my whole problem. It looks like I get the right expression for div A from *d(*A^t) and curl A from (*dA^t)^t just like it says in the thread as long as I consider my components to be in the form of the A^i in \Sigma_i \frac{A^i...

Sorry about this, but none of these formulas seem to work out for me so could someone tell me where I'm going wrong? I guess starting with the simplest one, the proposed form for the gradient of a scalar field in terms of the exterior derivative is: (d\phi)^t where the transpose of a...

Alright thanks. It looks like my problem happened here: \frac{d}{dt}(m\dot{x}+qA_x)=q\frac{\partial}{\partial x}(\dot{x}A_x+\dot{y}A_y+\dot{z}A_z) when I assumed that you could take that derivative of A_x with respect to time partially. If I had taken a total derivative I'd have seen...

Hey I have a question that was almost completely answered in this thread: https://www.physicsforums.com/showthread.php?t=116098 Specifically someone interpreted his question to be how exactly do you get that the term in the Lagrangian corresponding to the magnetic potential is...