A New Global 1-form in Lyra Geometric Cosmos Model

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	A New Global 1-form in Lyra Geometric Cosmos Model
	Zhi, HZ ; Shi, MJ ; Meng, XH ; Zhang, LZ
刊名	INTERNATIONAL JOURNAL OF THEORETICAL PHYSICS
	2014
卷号	53 期号:11 页码:4002-4011
关键词	COSMOLOGICAL MODELS IA SUPERNOVAE MANIFOLD CONSTANT UNIVERSE DECELERATION LAMBDA OMEGA
ISSN号	0020-7748
通讯作者	Meng, XH (reprint author), Nankai Univ, Dept Phys, Tianjin 300071, 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.
学科主题	Physics
收录类别	SCI
资助信息	Natural Science Foundation of China [11075078, 10675062]; Chinese Academy of Sciences (CAS) [KJCX2.YW.W10]
原文出处	http://dx.doi.org/10.1007/s10773-014-2151-4
语种	英语
WOS记录号	WOS:000343288900030
公开日期	2015-06-03
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/15594]
专题	理论物理研究所_理论物理所1978-2010年知识产出
推荐引用方式 GB/T 7714	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.
APA	Zhi, HZ,Shi, MJ,Meng, XH,&Zhang, LZ.(2014).A New Global 1-form in Lyra Geometric Cosmos Model.INTERNATIONAL JOURNAL OF THEORETICAL PHYSICS,53(11),4002-4011.
MLA	Zhi, HZ,et al."A New Global 1-form in Lyra Geometric Cosmos Model".INTERNATIONAL JOURNAL OF THEORETICAL PHYSICS 53.11(2014):4002-4011.