In this work, we study tracker phantom dark energy models with a general parametrization of the scalar potentials. Our analysis also considers the scenario of having both phantom field and the cosmological constant as the dark energy components. A detailed statistical analysis with current cosmological observations shows an increase in the value of the Hubble parameter due to the presence of phantom dark energy but it cannot alleviate the Hubble tension completely. Our results using Bayesian methods suggest a decisive evidence in favor of a phantom field over a positive cosmological constant, although the possibility of a negative cosmological constant cannot be ruled out, hidden in the dark sector.

中文翻译：

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跟踪器幻影场和宇宙常数：复合暗能量模型的动力学

在这项工作中，我们研究了具有标量势的一般参数化的跟踪器幻影暗能量模型。我们的分析还考虑了将幻影场和宇宙常数作为暗能量成分的情况。对当前宇宙学观测的详细统计分析表明，由于幻影暗能量的存在，哈勃参数值有所增加，但不能完全缓解哈勃张力。我们使用贝叶斯方法的结果表明了一个决定性的证据，支持正宇宙常数的幻影场，尽管不能排除负宇宙常数的可能性，隐藏在暗区。