1. May 17, 2007

### jostpuur

I've heard some random arguments about magnetic monopoles, and don't know what I should think about them yet. I can see that such electromagnetic field could not be described by the usual potential $$A^\mu$$. Is there some modified potential that allows magnetic monopoles? Is there a lagrangian density from which a modified Maxwell's equations could be derived?

2. May 18, 2007