Renormalization and redundancy in 2d quantum field theories

Understand

We analyze renormalization group (RG) flows in two-dimensional quantum field theories in the presence of redundant directions.

• We use the operator picture in which redundant operators are total derivatives.
• Our analysis has three levels of generality.
• We introduce a redundancy anomaly equation which is analyzed together with the RG anomaly equation previously considered by H.Osborn [8] and D.Friedan and A.Konechny [7].