Bianchi type-I Universe filled with disordered radiation in self-creation cosmology

Anisotropic Bianchi type-I models with constant deceleration parameter in general relativity

“…For simplification and description of the large scale structure and behavior of the actual universe anisotropic Bianchi-I models have been considered by a number of authors. In literature Belinskii and Khalatnikov (1976), Reddy (1987), Reddy and Venkateswarlu (1987), Lorenz-Petzold (1989), Venkateswarlu and Reddy (1990), Singh and Agrawal (1991), Gujman (1993), Chimento et al (1997), Bali and Gokhroo (2001), Bali and Keshav (2003) and others have studied anisotropic Bianchi type-I models in different contexts. Recently Bali and Anjali (2004) have investigated an anisotropic Bianchi type-I magnetized bulk viscous fluid string dust cosmological model.…”

LRS Bianchi Type-I Universe in Barber’s Second Self Creation Theory

“…The negative scalar field φ is the most natural choice for matter creation. This type of negative scalar field is discussed by Reddy [30,31]. In an other alternative to Einstein's general relativity Narlikar and Padmanabhan [15] have presented the cosmological model based on a negative-energy massless scalar creation field.…”

“…Carvalho [6] studied a homogeneous and isotropic model of the early universe in which parameter gamma of 'gamma law' equation of state varies continuously with cosmological time and presented a unified description of early universe for inflationary period and radiation-dominating era. Singh and Singh [39], Reddy [30,31], and Reddy et al [33] have presented Bianchi type space-times solutions in Barber's second theory of gravitation. Reddy and Venkateswarlu [32] presented Bianchi type-VI 0 cosmological solutions in Barber's second theory of gravitation both, in vacuum as well as in the presence of perfect fluid with pressure equal to energy density.…”

Axially symmetric radiating cosmological model in a self-creation cosmology

“…Several authors have investigated various cosmological models in Barbers second self creation theory Pimentel (1985), Soleng (1987), Singh (1984, Reddy (1987aReddy ( , 1987b, Reddy et al (1987), Reddy and Venkateswarlu (1989), Shanti and Rao (1991), Reddy and Naidu (2008), Pradhan and Vishwakarma (2002) are some of the authors who have discussed various cosmological models in second self creation theory. However axially symmetric cosmological models in the presence of radiating perfect fluid have not been investigated in second self creation theory proposed by Barber. Radiating cosmological models are also important to discuss the early stages of evolution of the universe.…”