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Inflationary anisotropic phases with bianchi-I cosmic model
New Astronomy ( IF 2 ) Pub Date : 2021-06-24 , DOI: 10.1016/j.newast.2021.101650
Z. Yousaf , W. Javed , I. Nawazish

This paper is devoted to studying warm anisotropic inflation using modified Chaplygin gas in the context of the Bianchi-I comic model. We investigate the dynamics of the warm intermediate universe model in two distinct regimes, i.e., weak and strong regimes in the context of generalized dissipative coefficient. We formulate solutions of dissipation coefficient, inflaton field, scalar & tensor (S/T) power spectra, spectral index in an environment of slow-roll approximation to discuss the existence of warm weak and strong inflation and checked their viability in view of 2018 Planck data. It is seen through graphical representation that the condition for the existence of warm weak inflation is preserved only for z=0 and z=1 whereas in the case of the strong dissipative regime, the compatibility is achieved for z=3. The corresponding decay rates and the S/T are found to be consistent with the current observations.



中文翻译:

带有 bianchi-I 宇宙模型的膨胀各向异性相

本文致力于在 Bianchi-I 漫画模型的背景下使用改良的 Chaplygin 气体研究暖各向异性膨胀。我们在广义耗散系数的背景下研究了两种不同状态下的暖中间宇宙模型的动力学,即弱状态和强状态。我们制定了耗散系数、暴胀子场、标量和张量 (S/T) 功率谱、慢滚近似环境中的谱指数的解,讨论暖弱和强暴胀的存在,并根据 2018 普朗克检查它们的可行性数据。通过图形表示可以看出,暖弱暴胀存在的条件仅在z=0z=1 而在强耗散机制的情况下,实现了兼容性 z=3. 发现相应的衰减率和 S/T 与当前的观察结果一致。

更新日期:2021-07-02
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