TY  - JOUR
PB  - SciPost Foundation
DO  - 10.21468/SciPostPhys.18.2.053
TI  - Quenching a Fermi superfluid across the BEC-BCS crossover
PY  - 2025/02/14
UR  - https://scipost.org/SciPostPhys.18.2.053
JF  - SciPost Physics
JA  - SciPost Phys.
VL  - 18
IS  - 2
SP  - 053
A1  - Breyer, Moritz
AU  - Eberz, Daniel
AU  - Kell, Andreas
AU  - Köhl, Michael
AB  - We study the response of a Fermi superfluid to a rapid change of the interaction strength. For a broad range of quench parameters, the order parameter exhibits damped oscillations, however, we also identify quench regimes in which these oscillations are absent. By comparing our data to a numerical model we find that the damping time constants are explainable by a dephasing in a local density approximation, however, the oscillation frequencies, while being comparable to the superconducting order parameter, display in detail significant differences to the integrable BCS (Bardeen-Cooper-Schrieffer) model.
ER  -

@Article{10.21468/SciPostPhys.18.2.053,
	title={{Quenching a Fermi superfluid across the BEC-BCS crossover}},
	author={Moritz Breyer and Daniel Eberz and Andreas Kell and Michael Köhl},
	journal={SciPost Phys.},
	volume={18},
	pages={053},
	year={2025},
	publisher={SciPost},
	doi={10.21468/SciPostPhys.18.2.053},
	url={https://scipost.org/10.21468/SciPostPhys.18.2.053},
}