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Jurnal Fisika FLUX
Published by Universitas Lambung Mangkurat
ISSN : 1829796X     EISSN : 25411713     DOI : -
Core Subject : Science, Education,
Earth & Planetary Sciences Education Materials Science & Nanotechnology Physics
Jurnal Fisika FLUX is a peer-reviewed, open access journal that publishes original research articles, review articles, as well as short communication in all areas of physics including applied physics, which includes: physics instrumentation and computation, biophysics, geophysics, physics materials, theoretical physics, and physics education. Journal use single peer reviewed to publish. This journal is published by Universitas Lambung Mangkurat Press. ISSN 1829-796X (print) and ISSN 2541-1713 (online) Jurnal Fisika FLUX is published twice a year. Articles will be peer reviewed first. Once ready to be published immediately on the current edition.
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Articles 581 Documents
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Kantowski-Sachs Cosmology with Perfect Fluid Matter Distribution in the f(R,T) Gravity Theory Muh. Fachrul Latief; A. Indra Wulan Sari Ramadani
Jurnal Fisika Flux: Jurnal Ilmiah Fisika FMIPA Universitas Lambung Mangkurat Vol 23, No 2 (2026): Jurnal Fisika Flux: Jurnal Ilmiah Fisika FMIPA Universitas Lambung Mangkurat
Publisher : Lambung Mangkurat University Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/flux.v23i2.25432

Abstract

This research investigates the exact solution of the Kantowski-Sachs metric within the framework of  gravity theory, with the matter distribution described as a perfect fluid. The  gravitational field equations are first derived using the modified Einstein-Hilbert action principle. Next, the system of field equations is solved by applying the assumption that the expansion scalar  is proportional to the shear scalar , thus obtaining a relationship between the Kantowski-Sachs metric coefficients. The obtained solution is used to analyze several physical parameters, including the Hubble parameter , spatial volume , expansion scalar , shear scalar , deceleration parameter , and jerk parameter . The results show that the model describes an anisotropic universe that begins from a Big Bang-type singularity, undergoes a decelerating expansion phase, and produces a jerk parameter value greater than the prediction of the  model. These findings indicate a deviation in the expansion dynamics of the early universe, although the interpretation is still limited by the assumption of proportionality  and the selection of a specific form of the function . Therefore, further testing of observational data is necessary to assess the validity of this model.

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