JOURNAL ARTICLE

The constrained cosmological model in Lyra geometry.

  • Published In: International Journal of Modern Physics D: Gravitation, Astrophysics & Cosmology, 2023, v. 32, n. 7. P. 1 1 of 3

  • Database: Academic Search Ultimate 2 of 3

  • Authored By: Singh, J. K.; Shaily; Ram, Shri; Santos, Joao R. L.; Fortunato, Jéferson A. S. 3 of 3

Abstract

In this paper, we study a flat homogeneous FLRW model in Lyra geometry which is described by a time-dependent displacement vector. We consider an appropriate parametrization of the energy density of scalar field ρ ϕ in terms of the cosmic scale factor. The result shows two transitions from deceleration to acceleration. Furthermore, we constrain the model parameter α and the displacement field vector β using the recent supernovae data, Hubble dataset of 77 points and their joint data which predict the accelerated expanding phase of the universe in late times. The effective equation of state parameter ω eff speculates Λ CDM in late times. Finally, we use the statefinder diagnostic to differentiate our model from the various dark energy models. [ABSTRACT FROM AUTHOR]

Additional Information

  • Source:International Journal of Modern Physics D: Gravitation, Astrophysics & Cosmology. 2023/05, Vol. 32, Issue 7, p1
  • Document Type:Article
  • Subject Area:Astronomy and Astrophysics
  • Publication Date:2023
  • ISSN:0218-2718
  • DOI:10.1142/S0218271823500402
  • Accession Number:164117535
  • Copyright Statement:Copyright of International Journal of Modern Physics D: Gravitation, Astrophysics & Cosmology is the property of World Scientific Publishing Company and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

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