Gravitational anomalies in gauge theory

[shiraz]

Dear All
Can anyone explain for me what is meant by gravitational anomalies in gauge theory?
What is the difference between it and gauge anomalies?
Thank you

 

[haushofer]

My first guess would be that gravitational anomalies arise in effective field theories of quantum gravity (quantization of GR) in triangle diagrams, which analogously to "normal" gauge anomalies in Yang-Mills theories threaten to spoil your gauge symmetry: the invariance under general coordinate transformations.

 

[shiraz]

My first guess would be that gravitational anomalies arise in effective field theories of quantum gravity (quantization of GR) in triangle diagrams, which analogously to "normal" gauge anomalies in Yang-Mills theories threaten to spoil your gauge symmetry: the invariance under general coordinate transformations.

Thank you haushofer.