A new on-shell 3-to-3 collision integral for identical fermions is derived, and model calculations find it reduces nuclear matter relaxation times by up to a factor 3 versus two-body collisions alone.
in case the shifted Fermi- spheres just touch each other in momentum space or are fully separated
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Quantum correlation dynamics and in-medium 3$\leftrightarrow$3 collisions of fermions
A new on-shell 3-to-3 collision integral for identical fermions is derived, and model calculations find it reduces nuclear matter relaxation times by up to a factor 3 versus two-body collisions alone.