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Anisotropic cosmology with vector field in the Noether approach
Zhang, Sun1,2; Dong, Yi-Qiao3
AbstractIn this Letter, based on Bianchi-I type cosmological model, we have studied the evolution of universe in terms of a vector field coupled to the scalar field. The symmetries of the system are calculated in the Noether approach, the scalar potential and the gauge kinetic function are also obtained following these symmetries. The dynamical equations are integrated numerically and the behaviors of cosmological evolution are presented certainly. Furthermore, the early-time and late-time scenarios are also reached asymptotically, that is, the universe is during the period of decelerating expansion in the early time while during the period of accelerating expansion in the late time. Moreover, we have also studied the expansion isotropization of the universe during evolution. There is no Kasner solution in the present case, while the universe would approach an isotropic Robertson-Walker one, concretely, a de Sitter type one in the late time.
KeywordCosmological Vector Field Anisotropy Bianchi Cosmology Noether Symmetry
Subject Area天文和天体物理
WOS HeadingsScience & Technology ; Physical Sciences
Indexed BySCI
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000360840500016
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Document Type期刊论文
Affiliation1.Chinese Acad Sci, Key Lab Dark Matter & Space Astron, Purple Mt Observ, Nanjing 210008, Jiangsu, Peoples R China
2.PMO NJU, Joint Ctr Particle Nucl Phys & Cosmol J CPNPC, Nanjing 210008, Jiangsu, Peoples R China
3.Chinese Acad Sci, Natl Astron Observ, Key Lab Opt Astron, Beijing 100012, Peoples R China
Recommended Citation
GB/T 7714
Zhang, Sun,Dong, Yi-Qiao. Anisotropic cosmology with vector field in the Noether approach[J]. ASTROPHYSICS AND SPACE SCIENCE,2015,359(1):16.
APA Zhang, Sun,&Dong, Yi-Qiao.(2015).Anisotropic cosmology with vector field in the Noether approach.ASTROPHYSICS AND SPACE SCIENCE,359(1),16.
MLA Zhang, Sun,et al."Anisotropic cosmology with vector field in the Noether approach".ASTROPHYSICS AND SPACE SCIENCE 359.1(2015):16.
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