Evolution of a Bianchi Type-V Universe in Modified Gravity: Anisotropy Decay, Energy Conditions and Dark Energy Emergence

R. P. Wankhade and A. S. Bansod

International Journal of Scientific Research in Science and Technology, 2025, vol. 12, issue 4, 495-504

Abstract: We investigate the evolution of a Bianchi type-V universe within the framework of f(R, T) gravity, incorporating a time-varying cosmological constant and a quadratic equation of state. By employing a specific form of the Hubble parameter, exact solutions to the modified field equations are obtained. The model exhibits an initial singularity, followed by anisotropy decay and a transition to a ΛCDM-like behaviour. The matter–geometry coupling inherent to f(R, T) gravity drives late-time acceleration. Energy conditions are examined and shown to be consistent with current observational bounds. The model asymptotically approaches a de Sitter phase, indicating the emergence and dominance of dark energy.

Keywords: Bianchi type-V space-time; Quadratic equation of state; f(R, T) gravity; Hubble Parameter (search for similar items in EconPapers)
Date: 2025
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Persistent link: https://EconPapers.repec.org/RePEc:etm:ijsrst:v12:y2025:i4:id:1034

DOI: 10.32628/IJSRST251302

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