Experimental viability of suppressing resonant two-point growth

Test experimentally whether fine-tuning the parameters of a periodically driven Bose–Einstein condensate can push resonant two-point-function growth to momenta outside the effective field theory’s validity range while retaining a measurable resonant three-point interaction signal.

Background

The periodically oscillating scale-factor setup is proposed as a way to generate large bispectra through resonant interactions without requiring the experimentally inaccessible large scale factors associated with late-time infrared growth.

The same periodic driving can also produce resonant particle production in the two-point function. The paper suggests choosing experimental parameters so that the two-point resonances occur only at very large momenta, beyond the effective theory’s reliable range, thereby allowing the interaction-generated bispectrum to dominate. The authors leave the practical viability of this strategy unresolved and identify experimental testing as necessary.