Timeline for When can a global symmetry be gauged?
Current License: CC BY-SA 3.0
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| Apr 17, 2013 at 13:02 | comment | added | Tomáš Brauner | Nice construction! In effect, it boils down to introducing a extra field $\chi$ which transforms as $\chi\to\chi-\theta_1-i\theta_2$, and replacing $\psi^\dagger i\partial_t\psi$ with $\frac i2[(\psi^\dagger+\chi^\dagger)\partial_t\psi-\partial_t\psi^\dagger(\psi+\chi)]$ and subsequently ordinary derivatives with covariant ones. I'm not sure if this is what I want though, since even after setting $A=0$, this theory has a different global symmetry than the theory I started with. Thanks anyway, you made me formulate more precisely what I'm looking for! | |
| Apr 17, 2013 at 10:36 | history | edited | user10001 | CC BY-SA 3.0 |
added 22 characters in body
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| Apr 17, 2013 at 10:20 | history | answered | user10001 | CC BY-SA 3.0 |