Abstract
The solutions of Einstein’s equations with cosmological constant (Λ) in the presence of a creation field have been obtained for general class of anisotropic cosmological models. We have obtained the cosmological solutions for two different scenarios of average scale factor. In first case, we have discussed three different types of physically viable cosmological solutions of average scale factor for the general class of Bianchi cosmological models by using a special law for deceleration parameter which is linear in time with a negative slope. In second case, we have discussed another three different forms of cosmological solutions by using the average scale factor in three different scenarios like Intermediate scenario, Logamediate scenario and Emergent scenario. All physical parameters are calculated and discussed in each physical viable cosmological model. We examine the nature of creation field and cosmological constant is dominated the early Universe but they do not survive for long time and finally tends to zero for large cosmic time t. We have also discussed the all energy conditions in each cases.
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Acknowledgements
The authors wish to place on record their sincere thanks to the referee for his valuable comments and suggestions. T.S. would like to thank to U.G.C., New Delhi for financial support under Emeritus Fellowship scheme. The work by R.C. and A.S. is supported in part by D.S.T., New Delhi under the project No. P-07-553.
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Chaubey, R., Shukla, A.K., Singh, A. et al. General class of Bianchi cosmological models with Λ in creation-field cosmology. Astrophys Space Sci 352, 839–857 (2014). https://doi.org/10.1007/s10509-014-1921-z
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DOI: https://doi.org/10.1007/s10509-014-1921-z