Ground state of hard-core bosons in one-dimensional periodic potentials

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	Ground state of hard-core bosons in one-dimensional periodic potentials
	Lin, Y ; Wu, B
刊名	PHYSICAL REVIEW A
	2007
卷号	75 期号:2
关键词	TONKS-GIRARDEAU GAS INTERACTING BOSE-GAS IMPENETRABLE BOSONS OPTICAL LATTICES CONDENSATE DYNAMICS HELIUM PHASES
ISSN号	1050-2947
通讯作者	Lin, Y: Chinese Acad Sci, Inst Phys, POB 603, Beijing 100080, Peoples R China.
中文摘要	With Girardeau's Fermi-Bose mapping, we find the exact ground states of hard-core bosons residing in a one-dimensional periodic potential. The analysis of these ground states shows that when the number of bosons N is commensurate with the number of wells M in the periodic potential, the boson system is a Mott insulator whose energy gap, however, is given by the single-particle band gap of the periodic potential; when N is not commensurate with M, the system is a metal (not a superfluid). In fact, we argue that there may be no superfluid phase for any one-dimensional boson system in terms of Landau's criterion of superfluidity. The Kronig-Penney potential is used to illustrate our results.
收录类别	SCI
语种	英语
公开日期	2013-09-17
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/38849]
专题	物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文
推荐引用方式 GB/T 7714	Lin, Y,Wu, B. Ground state of hard-core bosons in one-dimensional periodic potentials[J]. PHYSICAL REVIEW A,2007,75(2).
APA	Lin, Y,&Wu, B.(2007).Ground state of hard-core bosons in one-dimensional periodic potentials.PHYSICAL REVIEW A,75(2).
MLA	Lin, Y,et al."Ground state of hard-core bosons in one-dimensional periodic potentials".PHYSICAL REVIEW A 75.2(2007).