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cond-mat.quant-gas2026
Phonon number relaxation in a 3D superfluid with a concave acoustic branch
Yvan Castin, Mariia Tsimokha
We consider the collisional evolution towards equilibrium of a spatially homogeneous and isotropic phonon gas of a three-dimensional superfluid with a concave acoustic excitation b…
cond-mat.quant-gas2026
Pair distribution functions of a superfluid spin-1/2 Fermi gas with contact interactions in the linearized time-dependent BCS theory
Yvan Castin
We show that the minimal mean-field theory to use for calculating the pair distribution functions of a spatially homogeneous, unpolarized spin-1/2 sup…