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题名: A New Global 1-form in Lyra Geometric Cosmos Model
作者: Zhi, HZ ;  Shi, MJ ;  Meng, XH ;  Zhang, LZ
刊名: INTERNATIONAL JOURNAL OF THEORETICAL PHYSICS
出版日期: 2014
卷号: 53, 期号:11, 页码:4002-4011
关键词: COSMOLOGICAL MODELS ;  IA SUPERNOVAE ;  MANIFOLD ;  CONSTANT ;  UNIVERSE ;  DECELERATION ;  LAMBDA ;  OMEGA
学科分类: Physics
DOI: 10.1007/s10773-014-2151-4
通讯作者: Meng, XH (reprint author), Nankai Univ, Dept Phys, Tianjin 300071, Peoples R China.
部门归属: [Zhi, Haizhao ;  Meng, Xin-He ;  Zhang, Lianzhong] Nankai Univ, Dept Phys, Tianjin 300071, Peoples R China ;  [Shi, Mengjiao] Nankai Univ, Chern Inst Math, Tianjin 300071, Peoples R China ;  [Meng, Xin-He] Chinese Acad Sci, State Key Lab ITP, Beijing 100190, Peoples R China ;  [Meng, Xin-He] Chinese Acad Sci, Kavli Inst Theoret Phys China, Beijing 100190, Peoples R China
英文摘要: Dark energy phenomena has inspired lots of investigations on the cosmological constant problems. In order to understand its origin and properties as well as its impacts on universe's evolutions, there are many approaches to modify the well-known General Relativity, such as the Weyl-Lyra Geometry. In the well studied cosmology model within Lyra geometry, there is a problem that the first law of thermodynamics is violated. To unravel this issue, if we use the effective density and pressure in the Lyra cosmology model to preserve the first law of thermodynamics in the cosmos, the former 1-form (beta, 0, 0, 0) cannot give a proper vacuum behavior. In this paper, the auxiliary 1-form is modified to overcome this difficulty. It can be shown that the complex terms in the field equation derived from the regime of Lyra Geometric 3/2 phi(mu)phi(nu) - 3/4 delta(mu)(nu)phi(alpha)phi(alpha) with our new 1-form could behave just as the cosmological constant. This work can be regarded as a new exploration on a possible origin of the cosmological constant from a Lyra cosmology model.
资助者: Natural Science Foundation of China [11075078, 10675062]; Chinese Academy of Sciences (CAS) [KJCX2.YW.W10]
收录类别: SCI
原文出处: 查看原文
语种: 英语
WOS记录号: WOS:000343288900030
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/15594
Appears in Collections:理论物理所2014年知识产出 _期刊论文

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Recommended Citation:
Zhi, HZ,Shi, MJ,Meng, XH,et al. A New Global 1-form in Lyra Geometric Cosmos Model[J]. INTERNATIONAL JOURNAL OF THEORETICAL PHYSICS,2014,53(11):4002-4011.
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