# A Dimensional Transmutation

1. Oct 10, 2016

### ShayanJ

Here there is some explanation about dimensional transmutation that answered some of the questions I had about it.Those explanations are all I understand about the subject. But I still have some questions.

1) Is it correct to say that dimensional transmutation means you can replace the coupling constant in the Lagrangian with the energy scale using the RG flow equation? i.e. Does dimensional transmutation mean doing $L[g]\to L[\Lambda]$?

2) How is it that we still can do perturbation theory using the coupling constant in the weakly coupled (high energy) regime of QCD? How is it that dimensional transmutation doesn't affect that regime?

Thanks

2. Oct 15, 2016