- #1
petergreat
- 267
- 4
The field theories in the standard model haven't been shown to be mathematically consistent. Do "effective field theories" bypass this difficulty? Are they completely mathematically well-defined as an approximation? Of course, if the deeper underlying theory is another QFT or string theory, you still can't prove mathematical consistency. But suppose the underlying theory is a lattice model with a large but finite degree of freedom, do all the problems disappear?