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Heating induced by an oscillating modulation of the interaction strength inan atomic Fermion pair condensate is analyzed. The coupled fermion-boson model,generalized by incorporating a time-dependent intermode coupling through amagnetic Feshbach resonance, is applied. The dynamics is analyticallycharacterized in a perturbative scheme. The results account for experimentalfindings which have uncovered a damped and delayed response of the condensateto the modulation. The delay is due to the variation of the quasiparticleenergies and the subsequent relaxation of the condensate. The detected dampingresults from the excitations induced by a nonadiabatic modulation: for drivingfrequencies larger than twice the pairing gap, quasiparticles are generated,and, consequently, heating sets in.

Intermode-coupling modulation in the fermion-boson model: heating effects in the BCS regime