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题名: Quantum cosmology with a complex phi 4 field at finite temperature
作者: Zhang, TJ ;  Shen, YG
刊名: INTERNATIONAL JOURNAL OF THEORETICAL PHYSICS
出版日期: 1999
卷号: 38, 期号:7, 页码:1969-1979
关键词: SCALAR FIELD ;  UNIVERSE ;  CREATION ;  STATE
学科分类: Physics
通讯作者: Zhang, TJ , Chinese Acad Sci, Shanghai Astron Observ, Shanghai 200030, Peoples R China.
部门归属: Chinese Acad Sci, Shanghai Astron Observ, Shanghai 200030, Peoples R China; Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China; Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China
英文摘要: Quantum cosmology with a complex phi(4) field at finite temperature for the Vilenkin boundary condition and the Hartle-Hawking boundary condition is studied. The Euclidean region in minisuperspace is generally bounded by a closed curve. The wave function of the universe calculated in the WKB approximation can cross, through scattering or tunneling, from the initial classically allowed region to the final classically allowed region. For a given value of scalar field, the probability density for the Vilenkin boundary condition is smallest at zero temperature, and when temperature increases, the probability density rises remarkably. At the same time, the opposite results are given for Hartle-Hawking boundary condition. In addition, the classical trajectories of the universe are calculated in detail.
收录类别: SCI
原文出处: 查看原文
WOS记录号: WOS:000081879000010
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/13121
Appears in Collections:理论物理所1978-2010年知识产出_期刊论文

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Recommended Citation:
Zhang, TJ,Shen, YG. Quantum cosmology with a complex phi 4 field at finite temperature[J]. INTERNATIONAL JOURNAL OF THEORETICAL PHYSICS,1999,38(7):1969-1979.
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