National Changhua University of Education Institutional Repository : Item 987654321/14102
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题名: Universality and Stability for a Dilute Bose Gas with a Feshbach Resonance
作者: Lee, Yu-Li;Lee, Yu-Wen
贡献者: 物理學系
日期: 2010
上传时间: 2012-09-10T06:08:08Z
出版者: The American Physical Society
摘要: We study the bosonic atoms with a wide Feshbach resonance at zero temperature in terms of the renormalization group. We indicate that this system will always collapse in the dilute limit. On the side with a positive scattering length, the atomic superfluid is an unstable local minimum in the dilute limit and it determines the thermodynamics of this system within its lifetime. We calculate the equilibrium properties at zero temperature in the unitary regime. They exhibit universal scaling forms in the dilute limit due to the presence of a nontrivial zero temperature, zero-density fixed point. Moreover, we find that the T=0 thermodynamics of this system in the unitary limit is exactly identical to the one for an ideal Fermi gas.
關聯: Phys. Rev. A, 81(6): 063613
显示于类别:[物理學系] 期刊論文

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