Bianchi type-II space-times with constant deceleration parameter in self creation cosmology
Source: Astrophysics and Space Science, Volume 310, Numbers 1-2, July 2007 , pp. 31-39(9)
Abstract:The properties of locally rotationally symmetric Bianchi type-II perfect fluid space-times are analyzed in Barber’s second self-creation theory by using a special law of variation for Hubble’s parameter that yields a constant value of deceleration parameter. By assuming the equation of state p= , many new solutions are obtained for different era—Zel’dovich, radiation, vacuum and vacuum energy dominated. The solutions with power-law and exponential expansion are discussed. A detailed study of geometrical and physical parameters is carried out. The nature of singularity is also clarified in each case.
Document Type: Research Article
Publication date: 2007-07-01