Multipole charges in electrodynamics and the vacuum moduli space
5.04.2017
| Date | 5.04.2017 |
|---|---|
| Time | 14:00 |
| Place |
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| Speaker | Ali Seraj |
| Area of expertise | Physics |
| Host | Dep. Physik |
| Contact | Beisert/Gaberdiel |
| Abstract | We introduce multipole charges as the Noether charges associated with a subclass of gauge symmetries of Maxwell theory. We show that in a static configuration, these charges are proportional to the electric multipole moments which uniquely specify the system. Moreover, the conservation laws impose infinite number of constraints over the radiation in electrodynamics. The presence of multipole symmetries implies that the vacuum of gauge theory is not unique, but instead an infinite dimensional moduli space, the adiabatic motion on which generates well known solutions of the theory. |