Fundamental Scale Invariance

Understand

We propose fundamental scale invariance as a new theoretical principle beyond renormalizability.

• Quantum field theories with fundamental scale invariance admit a scale-free formulation of the functional integral and effective action in terms of scale invariant fields.
• They correspond to exact scaling solutions of functional renormalization flow equations.
• Such theories are highly predictive since all relevant parameters for deviations from the exact scaling solution vanish.