Electroweak-scale vacuum-energy naturalness estimate
= Electroweak-scale vacuum-energy naturalness estimate
A heavy field with mass $m$ introduces a natural vacuum-energy threshold scale of order $m^4$ up to couplings and loop factors. This is not a regulator-independent prediction: counterterms and renormalization are required. Comparing an electroweak mass to the observed vacuum density exposes a very large cancellation problem.