Wormholes supported by phantom energy from Shan-Chen cosmological fluids

doi:http://dx.doi.org/10.1140/epjc/s10052-016-4024-x

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	Wormholes supported by phantom energy from Shan-Chen cosmological fluids
	Wang, D ; Meng, XH
刊名	EUROPEAN PHYSICAL JOURNAL C
	2016
卷号	76 期号:3 页码:171
关键词	EQUATION-OF-STATE BULK VISCOSITY DARK ENERGY FRIEDMANN COSMOLOGY POSSIBLE EXISTENCE SUPERNOVAE UNIVERSE GRAVITY MODEL CONSTANT
DOI	http://dx.doi.org/10.1140/epjc/s10052-016-4024-x
英文摘要	In the present paper, the exact solutions of spherically symmetrical Einstein field equations describing wormholes supported by phantom energy that violates the null energy condition from Shan-Chen background fluid are obtained. We have considered the important case of the model parameter psi approximate to 1, which corresponds to the "saturation effect", and this regime corresponds to an effective form of "asymptotic freedom" for the fluids, but occurring at cosmological rather than subnuclear scales. Then we investigate the allowed range for the values of the model parameters g and omega when the spacetime metrics describe wormholes and discuss the possible singularities of the solutions, finding that the obtained spacetimes are geodesically complete. Furthermore, we construct two traversable wormholes through matching our obtained interior solutions to the exterior Schwarzschild solutions and analyze the traversablities of thewormholes. Finally, we consider the case of anisotropic pressure and discover that the transverse pressure also crosses the phantom divide -1 with the growth of the wormhole dimension, and it tends to be the same as the radial pressure with the growth of the wormhole radius.
学科主题	Physics
语种	英语
资助机构	National Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/23393]
专题	理论物理研究所_理论物理所1978-2010年知识产出
作者单位	1.Nankai Univ, Chern Inst Math, Div Theoret Phys, Tianjin 300071, Peoples R China 2.Nankai Univ, Dept Phys, Tianjin 300071, Peoples R China 3.Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100080, Peoples R China
推荐引用方式 GB/T 7714	Wang, D,Meng, XH. Wormholes supported by phantom energy from Shan-Chen cosmological fluids[J]. EUROPEAN PHYSICAL JOURNAL C,2016,76(3):171.
APA	Wang, D,&Meng, XH.(2016).Wormholes supported by phantom energy from Shan-Chen cosmological fluids.EUROPEAN PHYSICAL JOURNAL C,76(3),171.
MLA	Wang, D,et al."Wormholes supported by phantom energy from Shan-Chen cosmological fluids".EUROPEAN PHYSICAL JOURNAL C 76.3(2016):171.