ITP OpenIR  > 理论物理所2014年知识产出
The general property of dynamical quintessence field
Gong, YG; Gong, YG (reprint author), Huazhong Univ Sci & Technol, Sch Phys, MOE Key Lab Fundamental Quant Measurement, Wuhan 430074, Peoples R China.
2014
发表期刊PHYSICS LETTERS B
ISSN0370-2693
卷号731期号:-页码:342-349
摘要We discuss the general dynamical behaviors of quintessence field, in particular, the general conditions for tracking and thawing solutions are discussed. We explain what the tracking solutions mean and in what sense the results depend on the initial conditions. Based on the definition of tracking solution, we give a simple explanation on the existence of a general relation between w(phi) and Omega(phi) which is independent of the initial conditions for the tracking solution. A more general tracker theorem which requires large initial values of the roll parameter is then proposed. To get thawing solutions, the initial value of the roll parameter needs to be small. The power-law and pseudo-Nambu Goldstone boson potentials are used to discuss the tracking and thawing solutions. A more general w(phi)-Omega(phi) relation is derived for the thawing solutions. Based on the asymptotical behavior of the w(phi)-Omega(phi) relation, the flow parameter is used to give an upper limit on w'(phi) for the thawing solutions. If we use the observational constraint w(phi 0) < -0.8 and 0.2 < Omega(m0) < 0.4, then we require n less than or similar to 1 for the inverse power-law potential V(phi) = V-0(phi/m(pl)) (n) with tracking solutions and the initial value of the roll parameter vertical bar lambda(l)vertical bar < 1.3 for the potentials with the thawing solutions. (C) 2014 The Author. Published by Elsevier BAT. This is an open access article under the CC BY license (http:creativecommons.org/licenses/by/3.0/).
部门归属[Gong, Yungui] Huazhong Univ Sci & Technol, Sch Phys, MOE Key Lab Fundamental Quant Measurement, Wuhan 430074, Peoples R China
关键词Cosmological Scaling Solutions Pseudo-goldstone Bosons Dark Energy Scalar Field Modified Gravity Models Potentials Constant Universe Lambda
学科领域Physics
资助者National Basic Science Program (Project 973) of China [2010CB833004]; NNSF of China [10935013, 11175270]; Program for New Century Excellent Talents in University [NCET-12-0205]; Fundamental Research Funds for the Central Universities [2013YQ055] ; National Basic Science Program (Project 973) of China [2010CB833004]; NNSF of China [10935013, 11175270]; Program for New Century Excellent Talents in University [NCET-12-0205]; Fundamental Research Funds for the Central Universities [2013YQ055] ; National Basic Science Program (Project 973) of China [2010CB833004]; NNSF of China [10935013, 11175270]; Program for New Century Excellent Talents in University [NCET-12-0205]; Fundamental Research Funds for the Central Universities [2013YQ055] ; National Basic Science Program (Project 973) of China [2010CB833004]; NNSF of China [10935013, 11175270]; Program for New Century Excellent Talents in University [NCET-12-0205]; Fundamental Research Funds for the Central Universities [2013YQ055]
DOI10.1016/j.physletb.2014.03.013
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收录类别SCI
语种英语
资助者National Basic Science Program (Project 973) of China [2010CB833004]; NNSF of China [10935013, 11175270]; Program for New Century Excellent Talents in University [NCET-12-0205]; Fundamental Research Funds for the Central Universities [2013YQ055] ; National Basic Science Program (Project 973) of China [2010CB833004]; NNSF of China [10935013, 11175270]; Program for New Century Excellent Talents in University [NCET-12-0205]; Fundamental Research Funds for the Central Universities [2013YQ055] ; National Basic Science Program (Project 973) of China [2010CB833004]; NNSF of China [10935013, 11175270]; Program for New Century Excellent Talents in University [NCET-12-0205]; Fundamental Research Funds for the Central Universities [2013YQ055] ; National Basic Science Program (Project 973) of China [2010CB833004]; NNSF of China [10935013, 11175270]; Program for New Century Excellent Talents in University [NCET-12-0205]; Fundamental Research Funds for the Central Universities [2013YQ055]
WOS记录号WOS:000334094500055
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文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/15792
专题理论物理所2014年知识产出
通讯作者Gong, YG (reprint author), Huazhong Univ Sci & Technol, Sch Phys, MOE Key Lab Fundamental Quant Measurement, Wuhan 430074, Peoples R China.
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Gong, YG,Gong, YG . The general property of dynamical quintessence field[J]. PHYSICS LETTERS B,2014,731(-):342-349.
APA Gong, YG,&Gong, YG .(2014).The general property of dynamical quintessence field.PHYSICS LETTERS B,731(-),342-349.
MLA Gong, YG,et al."The general property of dynamical quintessence field".PHYSICS LETTERS B 731.-(2014):342-349.
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