LRS Bianchi Type-II Cosmological Model with a Decaying Lambda Term
LRS比安奇-II型宇宙模型与一个腐朽的lambda项作者机构:Department of MathematicsGovt.Model Science College RewaM.P.486001India
出 版 物:《Chinese Physics Letters》 (中国物理快报(英文版))
年 卷 期:2012年第29卷第1期
页 面:35-37页
核心收录:
学科分类:07[理学] 070401[理学-天体物理] 0805[工学-材料科学与工程(可授工学、理学学位)] 0704[理学-天文学]
摘 要:We consider a locally rotationally symmetric(LRS)Bianchi type-Ⅱspacetime with a perfect fluid and a variable cosmological constant∧.To solve the Einstein field equations we consider the cosmological term∧to be proportional to R^(-m) with R being the scale factor and m a constant[***.D 58(1998)043506].In this model we obtain∧~H^(2),∧~(R)/R and Larnbda~t^(-2),in agreement with the main dynamical laws for the decay of∧.The physical significance of the cosmological model is also discussed.