In the large-charge EFT of neutrons, effective-range corrections to the two-point function first appear at second order in the effective range, and the deformed theory has a narrow but usable perturbative window for Q=3 to 6 final-state neutrons.
Collective oscillations of a trapped Fermi gas near the unitary limit
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abstract
We calculate the oscillation frequencies of trapped Fermi condensate with particular emphasis on the equation of state of the interacting Fermi system. We confirm Stringari's finding that the frequencies are independent of the interaction in the unitary limit, and we extend the theory away from that limit, where the interaction does affect the frequencies of the compressional modes only.
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Unnuclear matter at large-charge
In the large-charge EFT of neutrons, effective-range corrections to the two-point function first appear at second order in the effective range, and the deformed theory has a narrow but usable perturbative window for Q=3 to 6 final-state neutrons.