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Generally the cosmological \(\varLambda \) CDM models are constructed with \(f(a)\propto a^{3}\) . Considering a cubic function f(a), the vacuum energy density is calculated and corresponding constraints are tuned with Chevallier-Polarski-Linder (CPL) equation of state parameterization. During the construction of the Problem the function f(a) is assumed to be carrying cubic, quadratic and liner terms, so that the model behaves to carry a comparatively complex system to and accommodate different possible conditions to represent dark energy.

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CPL Parameterized Equation of State of Cubic, Quadratic and Linear Terms of  \(\varLambda \) CDM Models

  • 会议论文

  • 发表日期：

    2025年

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  • Priya Deb,
  • Shaheb Choudhury,
  • Sovan Ghosh

摘要

Generally the cosmological \(\varLambda \) CDM models are constructed with \(f(a)\propto a^{3}\) . Considering a cubic function f(a), the vacuum energy density is calculated and corresponding constraints are tuned with Chevallier-Polarski-Linder (CPL) equation of state parameterization. During the construction of the Problem the function f(a) is assumed to be carrying cubic, quadratic and liner terms, so that the model behaves to carry a comparatively complex system to and accommodate different possible conditions to represent dark energy.