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NCUEIR > College of Science > Department of Physics > Periodical Articles > Item 987654321/14102

Please use this identifier to cite or link to this item: http://ir.ncue.edu.tw/ir/handle/987654321/14102

Title:	Universality and Stability for a Dilute Bose Gas with a Feshbach Resonance
Authors:	Lee, Yu-Li;Lee, Yu-Wen
Contributors:	物理學系
Date:	2010
Issue Date:	2012-09-10T06:08:08Z
Publisher:	The American Physical Society
Abstract:	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.
Relation:	Phys. Rev. A, 81(6): 063613
Appears in Collections:	[Department of Physics] Periodical Articles

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