TY - JOUR
T1 - Structure of a quantized vortex near the BCS-BEC crossover in an atomic fermi gas
AU - Machida, M.
AU - Koyama, T.
PY - 2005/4/15
Y1 - 2005/4/15
N2 - In order to clarify the structure of a singly quantized vortex in a superfluid fermion gas near the Feshbach resonance, we numerically solve the generalized Bogoliubov-de Gennes equation in the boson-fermion model. The superfluid gap, which contains contributions from both condensed fermion pairs and condensed bosons, is self-consistently determined, and the quasiparticle excitation levels bound in the vortex core are explicitly shown. We find that the boson condensate contributes to enhance the matter density depletion and the discreteness of localized quasiparticle spectrum inside the core. It is predicted that the matter density depletion and the discrete core levels are detectable in the vicinity of the BCS-Bose-Einstein condensation crossover point.
AB - In order to clarify the structure of a singly quantized vortex in a superfluid fermion gas near the Feshbach resonance, we numerically solve the generalized Bogoliubov-de Gennes equation in the boson-fermion model. The superfluid gap, which contains contributions from both condensed fermion pairs and condensed bosons, is self-consistently determined, and the quasiparticle excitation levels bound in the vortex core are explicitly shown. We find that the boson condensate contributes to enhance the matter density depletion and the discreteness of localized quasiparticle spectrum inside the core. It is predicted that the matter density depletion and the discrete core levels are detectable in the vicinity of the BCS-Bose-Einstein condensation crossover point.
UR - http://www.scopus.com/inward/record.url?scp=18144422112&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=18144422112&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.94.140401
DO - 10.1103/PhysRevLett.94.140401
M3 - Article
AN - SCOPUS:18144422112
VL - 94
JO - Physical Review Letters
JF - Physical Review Letters
SN - 0031-9007
IS - 14
M1 - 140401
ER -