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	Quenching of macroscopic quantum coherence and macroscopic fermi-particle configurations
	Liang, JQ; MullerKirsten, HJW; Zhou, JG
刊名	Zeitschrift fur physik b-condensed matter
	1997-04-01
卷号	102期号:4页码:525-529
ISSN号	0722-3277
英文摘要	Starting from the coherent state representation of the evolution operator with the help of the path-integral, we derive a formula for the low-lying levels e = epsilon(0) - 2 delta epsilon cos(s + xi)pi of a quantum spin system. the quenching of macroscopic quantum coherence is understood as the vanishing of cos(s + xi)pi in disageement with the suppression of tunneling (i.e. delta epsilon = 0) as claimed in the literature. a new configuration called the macroscopic fermi-particle is suggested by the nature of its wave function. the tunneling (2 delta epsilon/pi) does not vanish, not for integer spin s nor for a half-integer value of s, and is calculated explicitly (for the position dependent mass) up to the one-loop approximation.
WOS关键词	MAGNETIC PARTICLES ; FALSE VACUUM ; INTERFERENCE ; ENERGY ; SYSTEM ; FATE
WOS研究方向	Physics
WOS类目	Physics, Condensed Matter
语种	英语
出版者	SPRINGER
WOS记录号	WOS:A1997WT95300015
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2373782
专题	物理研究所
作者单位	1.SHANXI UNIV, INST THEORET PHYS, TAIYUAN 030006, SHANXI, PEOPLES R CHINA 2.ACAD SINICA, INST PHYS, BEIJING 100080, PEOPLES R CHINA
推荐引用方式 GB/T 7714	Liang, JQ,MullerKirsten, HJW,Zhou, JG. Quenching of macroscopic quantum coherence and macroscopic fermi-particle configurations[J]. Zeitschrift fur physik b-condensed matter,1997,102(4):525-529.
APA	Liang, JQ,MullerKirsten, HJW,&Zhou, JG.(1997).Quenching of macroscopic quantum coherence and macroscopic fermi-particle configurations.Zeitschrift fur physik b-condensed matter,102(4),525-529.
MLA	Liang, JQ,et al."Quenching of macroscopic quantum coherence and macroscopic fermi-particle configurations".Zeitschrift fur physik b-condensed matter 102.4(1997):525-529.

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