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Quantum cosmology with a complex phi 4 field at finite temperature
Zhang, TJ; Shen, YG; Zhang, TJ , Chinese Acad Sci, Shanghai Astron Observ, Shanghai 200030, Peoples R China.
1999
发表期刊INTERNATIONAL JOURNAL OF THEORETICAL PHYSICS
ISSN0020-7748
卷号38期号:7页码:1969-1979
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.
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
关键词Scalar Field Universe Creation State
学科领域Physics
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收录类别SCI
WOS记录号WOS:000081879000010
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被引频次:2[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/13121
专题理论物理所1978-2010年知识产出
通讯作者Zhang, TJ , Chinese Acad Sci, Shanghai Astron Observ, Shanghai 200030, Peoples R China.
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GB/T 7714
Zhang, TJ,Shen, YG,Zhang, TJ , Chinese Acad Sci, Shanghai Astron Observ, Shanghai 200030, Peoples R China.. Quantum cosmology with a complex phi 4 field at finite temperature[J]. INTERNATIONAL JOURNAL OF THEORETICAL PHYSICS,1999,38(7):1969-1979.
APA Zhang, TJ,Shen, YG,&Zhang, TJ , Chinese Acad Sci, Shanghai Astron Observ, Shanghai 200030, Peoples R China..(1999).Quantum cosmology with a complex phi 4 field at finite temperature.INTERNATIONAL JOURNAL OF THEORETICAL PHYSICS,38(7),1969-1979.
MLA Zhang, TJ,et al."Quantum cosmology with a complex phi 4 field at finite temperature".INTERNATIONAL JOURNAL OF THEORETICAL PHYSICS 38.7(1999):1969-1979.
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