A 3D unitary Fermi gas in a nearly isotropic harmonic trap supports an almost undamped breathing mode at 2 times the trap frequency, with damping-to-frequency ratio about 0.002.
t1,2,3 are the equilibrium times of the system: t1 ≈ 20 ms, t2 ≈ 100 ms, t3 ≈ 30 ms
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Persistent breather and dynamical symmetry in a unitary Fermi gas
A 3D unitary Fermi gas in a nearly isotropic harmonic trap supports an almost undamped breathing mode at 2 times the trap frequency, with damping-to-frequency ratio about 0.002.