 However, the crucial point is, that the VEV

depends very sensitively upon formula_10, at least for small values of formula_10.Because the nature of infrared physics also depends upon the VEV, it looks very different even for a tiny change in formula_10 not because the physics in the vicinity of formula_27 changes much — it hardly changes at all — but because the VEV we are expanding about has changed enormously.Supersymmetric models with a modulus can often have dangerously irrelevant parameters.