3 papers
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 s…
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-gas2025
Open questions for strongly interacting Fermi gases with zero-range interactions
Yvan Castin
We review some unresolved theoretical issues in three-dimensional two-component Fermi gases, drawing on recent experiments on cold atoms in immaterial traps close to a magnetic Fes…