TY - JOUR
T1 - Tan's universal contact and collective oscillations of strongly interacting Fermi gases
AU - DelloStritto, Mark
AU - DeSilva, Theja Nilantha
PY - 2012/7/9
Y1 - 2012/7/9
N2 - We study strongly interacting two component Fermi gas near a Feshbach resonance. By using a ground state energy functional constructed based on asymptotic limits and Monte Carlo calculations, we calculate the contact, structure factor, and collective oscillation frequencies in the BCS-BEC crossover region. The calculated contact and structure factor show excellent agreements with recent experiments. We compare these results with a standard mean-field theory and find that the contact is proportional to the square of superfluid order parameter. Further, we present the chemical potential and the polytropic index in terms of homogeneous energy and the contact.
AB - We study strongly interacting two component Fermi gas near a Feshbach resonance. By using a ground state energy functional constructed based on asymptotic limits and Monte Carlo calculations, we calculate the contact, structure factor, and collective oscillation frequencies in the BCS-BEC crossover region. The calculated contact and structure factor show excellent agreements with recent experiments. We compare these results with a standard mean-field theory and find that the contact is proportional to the square of superfluid order parameter. Further, we present the chemical potential and the polytropic index in terms of homogeneous energy and the contact.
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U2 - 10.1016/j.physleta.2012.05.054
DO - 10.1016/j.physleta.2012.05.054
M3 - Article
AN - SCOPUS:84862224571
SN - 0375-9601
VL - 376
SP - 2298
EP - 2305
JO - Physics Letters, Section A: General, Atomic and Solid State Physics
JF - Physics Letters, Section A: General, Atomic and Solid State Physics
IS - 34
ER -