摘要We investigate the locally rotationally symmetric (LRS) Bianchi type-I cosmological model for stiff matter and a vacuum solution with a cosmological term proportional to R-m (R is the scale factor and m is a positive constant). The cosmological term decreases with time. We obtain that for both the cases the present universe is accelerating with a large fraction of cosmological density in the form of a cosmological term.
Abstract：We investigate the locally rotationally symmetric (LRS) Bianchi type-I cosmological model for stiff matter and a vacuum solution with a cosmological term proportional to R-m (R is the scale factor and m is a positive constant). The cosmological term decreases with time. We obtain that for both the cases the present universe is accelerating with a large fraction of cosmological density in the form of a cosmological term.
(Particle-theory and field-theory models of the early Universe (including cosmic pancakes, cosmic strings, chaotic phenomena, inflationary universe, etc.))
R. K. Tiwari;Navin Kumar Jha. Locally Rotationally Symmetric Bianchi Type-I Model with Time Varying Λ Term[J]. 中国物理快报, 2009, 26(10): 109804-109804.
R. K. Tiwari, Navin Kumar Jha. Locally Rotationally Symmetric Bianchi Type-I Model with Time Varying Λ Term. Chin. Phys. Lett., 2009, 26(10): 109804-109804.
2009, Vol. 26 
