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Bulk viscous barotropic magnetised string cosmological models

机译:大块粘性正压磁化弦宇宙模型

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摘要

Spatially homogeneous and anisotropic LRSBianchi type-I string cosmological models are studied in the frame work of general relativity when the source for the energy momentum tensor is a bulk viscous fluid containing one dimensional strings embedded in a magnetic field. A barotropic equation of state for the pressure and density is assumed to get determinate solutions of the field equations. The bulk viscous pressure is assumed to be proportional to the energy density. The effects of viscosity and electromagnetic field on the properties of the model are investigated. The role of bulk viscosity and electromagnetic field in getting an inflationary phase and in establishing a string phase in the universe is studied. Keywords String - Viscous pressure - Magnetic field
机译:当能量动量张量的源是包含在磁场中嵌入一维弦的块状粘性流体时,在广义相对论的框架中研究了空间均匀且各向异性的LRSBianchi I型弦宇宙论模型。假定压力和密度的正压状态方程可得到场方程的确定解。假定总粘性压力与能量密度成正比。研究了粘度和电磁场对模型性能的影响。研究了整体粘度和电磁场在获得膨胀相和在宇宙中建立弦相的作用。关键词弦-粘性压力-磁场

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