How are renormalizability and locality connected?

  • #1
jakob1111
Gold Member
26
17
In his paper Quantum Field Theory: renormalization and the renormalization group Zinn-Justin states:

Low energy physics does not depend on all the details of the microscopic model because some RG has an IR fixed point or at least a low dimension fixed surface. Of course at this stage the next more fundamental theory may still assume the form of a local quantum field theory, but ultimately locality will have to be abandoned.

Where does the connection between the fact that low energy physics does not depend on all details of the microscopic model and that "ultimately locality will have to be abandoned" come from?
 

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