气候变化领域集成服务门户(CCPortal): Observation of dynamical fermionization

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DOI	10.1126/science.aaz0242
	Observation of dynamical fermionization
	Wilson J.M.; Malvania N.; Le Y.; Zhang Y.; Rigol M.; Weiss D.S.
发表日期	2020
ISSN	0036-8075
起始页码	1461
结束页码	1464
卷号	367 期号:6485
英文摘要	The wave function of a Tonks-Girardeau (T-G) gas of strongly interacting bosons in one dimension maps onto the absolute value of the wave function of a noninteracting Fermi gas. Although this fermionization makes many aspects of the two gases identical, their equilibrium momentum distributions are quite different. We observed dynamical fermionization, where the momentum distribution of a T-G gas evolves from bosonic to fermionic after its axial confinement is removed. The asymptotic momentum distribution after expansion in one dimension is the distribution of rapidities, which are the conserved quantities associated with many-body integrable systems. Our measurements agree well with T-G gas theory. We also studied momentum evolution after the trap depth is suddenly changed to a new nonzero value, and we observed the theoretically predicted bosonic-fermionic oscillations. © 2020 American Association for the Advancement of Science. All rights reserved.
关键词	detection method measurement method observational method one-dimensional modeling article oscillation
语种	英语
来源机构	Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/133600
推荐引用方式 GB/T 7714	Wilson J.M.,Malvania N.,Le Y.,et al. Observation of dynamical fermionization[J]. Science,2020,367(6485).
APA	Wilson J.M.,Malvania N.,Le Y.,Zhang Y.,Rigol M.,&Weiss D.S..(2020).Observation of dynamical fermionization.,367(6485).
MLA	Wilson J.M.,et al."Observation of dynamical fermionization".367.6485(2020).