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Excitations in the BCS–BEC crossover regime of a superfluid Fermi gas with a Feshbach resonance

Yoji Ohashi

Physica C SuperconductivityApr 19, 20060 citations

Perturbative HFB for many-body pairing correlation(Poster presentation,YITP Workshop on New Developments in Nuclear Self-Consistent Mean-Field Theories (MF05))

K. Hagino, Hiroyuki Sagawa

素粒子論研究Nov 20, 20050 citations

Vortex state in a superfluid Fermi gas near a Feshbach resonance

Yuki Kawaguchi, Tetsuo Ohmi

We consider a single vortex in a superfluid Fermi gas in the BCS-BEC crossover regime near a Feshbach resonance. The effect of the molecular Bose-Einstein condensate upon the vortex structure is discussed within the mean field approximation at zero temperature. Using the self-consistent Bogoliubov-de Gennes equation of the fermion-boson coupled model, we calculate density distributions of atoms and molecules. As the number of the molecules increases, both atomic and molecular density changes from BCS-like distribution to BEC-like. We also study the change of the vortex core size in the crossover regime.We consider a single vortex in a superfluid Fermi gas in the BCS-BEC crossover regime near a Feshbach resonance. The effect of the molecular Bose-Einstein condensate upon the vortex structure is discussed within the mean field approximation at zero temperature. Using the self-consistent Bogoliubov-de Gennes equation of the fermion-boson coupled model, we calculate density distributions of atoms and molecules. As the number of the molecules increases, both atomic and molecular density changes from BCS-like distribution to BEC-like. We also study the change of the vortex core size in the crossover regime.

arXiv:cond-mat/0411018Nov 1, 20040 citations

New Fermion Superfluidity in a Gas of Fermi Atoms with a Feshbach Resonance

Yoji Ohashi

日本物理學會誌Jan 1, 20040 citations

Density matrix renormalization group and wave function factorization for nuclei(DMRG and (continuum) shell model YITP Workshop on New Developments in Nuclear Self-Consistent Mean-Field Theories (MF05))

T. Papenbrock

素粒子論研究Nov 20, 20050 citations

Collective modes in the BCS-BEC crossover region in a trapped Fermi gas with a Feshbach resonance.

Allan Griffin, O. Ohashi

APSMar 1, 20040 citations

New Fermion Superfluidity and the BCS-BEC Crossover in a Trapped Gas of Fermi Atoms with a Feshbach Resonance(Fermion-pair condensation at low density,YITP Workshop on New Developments in Nuclear Self-Consistent Mean-Field Theories (MF05))

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New Fermion Superfluidity and the BCS-BEC Crossover in a Trapped Gas of Fermi Atoms with a Feshbach Resonance(Fermion-pair condensation at low density,YITP Workshop on New Developments in Nuclear Self-Consistent Mean-Field Theories (MF05))

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