# Gauge invariance and diffeomorphism invariance in Chern-Simons theory

I have studied Chern-Simons (CS) theory somewhat and I am puzzled by the question of how diff. and gauge invariance in CS theory are related, e.g. in $SU(2)$ CS theory. In particular, I would like to know about the relation between large gauge transformations and large diffeos. If you know any good sources, I would be really grateful. Thank you!

• The context here is U(1) CS, but it may be useful background if you haven't seen it already – twistor59 Apr 2 '13 at 18:29
• – Qmechanic Nov 1 '17 at 18:11