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

Author

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  • R. P. Wankhade
  • A. S. Bansod

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.

Suggested Citation

  • R. P. Wankhade & A. S. Bansod, 2025. "Evolution of a Bianchi Type-V Universe in Modified Gravity: Anisotropy Decay, Energy Conditions and Dark Energy Emergence," International Journal of Scientific Research in Science and Technology, Technoscience Academy, vol. 12(4), pages 495-504, August.
    • Handle: RePEc:etm:ijsrst:v12:y2025:i4:id:1034
    DOI: 10.32628/IJSRST251302
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