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How to find the Hamiltonian density for electromagnetic field? And, how to solve the stress tensor for electromagnetic field? [closed]
How to find the Hamiltonian density for electromagnetic field? And, how to solve the stress tensor for electromagnetic field?
0
votes
1
answer
1k
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Klein-Gordon, gauge transformation [closed]
It must be really simple, but I cannot get why can we add an $i e \frac{\partial \Lambda}{\partial x}$ in the second row below.
The propagation of a charged scalar particle, along the x-axis and in ...
- 3
7
votes
2
answers
2k
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Derivation of the quadratic form of the Dirac equation
I am asked to derive the quadratic form of the Dirac equation in an electromagnetic field,
$\left[\left(i\hbar \partial - \frac{e}{c}A\right)^2 - \frac{\hbar e}{2c} \sigma^{\mu\nu} F_{\mu\nu} - m^2c^...
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