10 citations · 13 across the 4 of their papers we have counts for
4 papers
BEC-BCS Crossover with Feshbach Resonance for Three-Hyperfine-Species Model
Guojun Zhu
In a Feshbach resonance, the effective s-wave scattering length grows when one moves toward the resonance point, and eventually diverges at this point. There is one characteristic…
BEC-BCS Crossover with Feshbach Resonance for a Three-Hyperfine-Species Model
Guojun Zhu, Anthony J. Leggett
We consider the behavior of an ultracold Fermi gas across a narrow Feshbach resonance, where the occupation of the closed channel may not be negligible. While the corrections to th…
Competition between BCS-pairing and "moth-eaten effect" in BEC-BCS crossover
Guojun Zhu, Monique Combescot
We study the change in condensation energy from a single pair of fermionic atoms to a large number of pairs interacting via the reduced BCS potential. We find that the energy-savin…
Coboson formalism for Cooper pairs used to derive Richardson's equations
Monique Combescot, Guojun Zhu
We propose a many-body formalism for Cooper pairs which has similarities to the one we recently developed for composite boson excitons (coboson in short). Its Shiva diagram represe…