Strongly correlated Fermi superfluid near an orbital Feshbach resonance: Stability, equation of state, and Leggett mode

CORC > 武汉物理与数学研究所 > 中国科学院武汉物理与数学研究所 > 原子分子光物理研究部

	Strongly correlated Fermi superfluid near an orbital Feshbach resonance: Stability, equation of state, and Leggett mode
	He, Lianyi 1,2; Wang, Jia 3; Peng, Shi-Guo 3,4; Liu, Xia-Ji 3; Hu, Hui 3
刊名	PHYSICAL REVIEW A
	2016-10-13
卷号	94 期号:4
英文摘要	We theoretically study the superfluid phase of a strongly correlated Yb-173 Fermi gas near its orbital Feshbach resonance by developing a quantitative pair-fluctuation theory within a two-band model. We examine the density excitation spectrum of the system and determine a stability phase diagram. We find that the Yb-173 Fermi gas is intrinsically metastable and has a peculiar equation of state, due to the small but positive singlet scattering length. The massive Leggett mode, arising from the fluctuation of the relative phase of two order parameters, is severely damped. We discuss the parameter space where an undamped Leggett mode may exist.
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Optics ; Physics, Atomic, Molecular & Chemical
研究领域[WOS]	Optics ; Physics
关键词[WOS]	UNIVERSAL THERMODYNAMICS ; ULTRACOLD GASES ; SUPERCONDUCTIVITY ; TEMPERATURE ; TRANSITION ; CROSSOVER ; PHYSICS ; BCS
收录类别	SCI
语种	英语
WOS记录号	WOS:000385618500006
内容类型	期刊论文
源URL	[http://ir.wipm.ac.cn/handle/112942/9605]
专题	武汉物理与数学研究所_原子分子光物理研究部
作者单位	1.Tsinghua Univ, Dept Phys, State Key Lab Low Dimens Quantum Phys, Beijing 100084, Peoples R China 2.Tsinghua Univ, Dept Phys, Collaborat Innovat Ctr Quantum Matter, Beijing 100084, Peoples R China 3.Swinburne Univ Technol, Ctr Quantum & Opt Sci, Melbourne, Vic 3122, Australia 4.Chinese Acad Sci, Wuhan Inst Phys & Math, State Key Lab Magnet Resonance & Atom & Mol Phys, Wuhan 430071, Peoples R China
推荐引用方式 GB/T 7714	He, Lianyi,Wang, Jia,Peng, Shi-Guo,et al. Strongly correlated Fermi superfluid near an orbital Feshbach resonance: Stability, equation of state, and Leggett mode[J]. PHYSICAL REVIEW A,2016,94(4).
APA	He, Lianyi,Wang, Jia,Peng, Shi-Guo,Liu, Xia-Ji,&Hu, Hui.(2016).Strongly correlated Fermi superfluid near an orbital Feshbach resonance: Stability, equation of state, and Leggett mode.PHYSICAL REVIEW A,94(4).
MLA	He, Lianyi,et al."Strongly correlated Fermi superfluid near an orbital Feshbach resonance: Stability, equation of state, and Leggett mode".PHYSICAL REVIEW A 94.4(2016).