• String cosmology in Bianchi type-VI0 dusty Universe with electromagnetic field

    • Fulltext


        Click here to view fulltext PDF

      Permanent link:

    • Keywords


      Bianchi type-VI0 Universe; Nambu string; massive string.

    • Abstract


      In this paper, the effect of electromagnetic field in the string Bianchi type-VI0 Universe is investigated. Einstein’s field equations have been solved exactly with suitable physical assumptions for two types of strings: (i) massive strings and (ii) Nambu strings. It is found that when the Universe is dominated by massive strings, the existence of electromagnetic field is necessary as it accelerates the expansion of the Universe. But when our Universe is dominated by Nambu strings, the electromagnetic field does not have significant effect on the evolution of the Universe. We have also shown that the early massive string-dominated Universe got converted to Nambu string-dominated Universe later. Our models are derived from an early deceleration phase to an accelerating phase which is consistent with the recent observations of supernovae type-Ia. The physical and geometrical behaviour of these models are also discussed.

    • Author Affiliations


      Hassan Amirhashchi1

      1. Young Researchers Club, Mahshahr Branch, Islamic Azad University, Mahshahr, Iran
    • Dates

  • Pramana – Journal of Physics | News

    • Editorial Note on Continuous Article Publication

      Posted on July 25, 2019

      Click here for Editorial Note on CAP Mode

© 2021-2022 Indian Academy of Sciences, Bengaluru.