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Observational constraints of modified Chaplygin gas in loop quantum cosmology

机译:环状量子宇宙学中修饰的Chaplygin气体的观测约束

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We have considered the FRW universe in loop quantum cosmology (LQC) model filled with the dark matter (perfect fluid with negligible pressure) and the modified Chaplygin gas (MCG) type dark energy. We present the Hubble parameter in terms of the observable parameters Ω m0, Ω x0 and H 0 with the redshift z and the other parameters like A, B, C, and α. From the Stern data set (12 points), we have obtained the bounds of the arbitrary parameters by minimizing the χ 2 test. The best fit values of the parameters are obtained by 66 %, 90 % and 99 % confidence levels. Next due to joint analysis with BAO and CMB observations, we have also obtained the bounds of the parameters (B,C) by fixing some other parameters α and A. From the best fit of the distance modulus μ(z) for our theoretical MCG model in LQC, we concluded that our model is in agreement with the Union2 sample data.
机译:我们已经考虑了充满暗物质(压力可忽略不计的完美流体)和改良的Chaplygin气体(MCG)型暗能量的环路量子宇宙学(LQC)模型中的FRW宇宙。我们用可观测参数Ω m0 ,Ω x0 和H 0 表示哈勃参数,并带有红移z和其他参数,例如A ,B,C和α。从Stern数据集(12个点)中,我们通过最小化χ 2 检验获得了任意参数的界限。通过66%,90%和99%的置信度可获得参数的最佳拟合值。接下来,通过与BAO和CMB观测值的联合分析,我们还通过固定其他一些参数α和A获得了参数(B,C)的界线。从理论MCG的距离模量μ(z)的最佳拟合LQC中的模型,我们得出的结论是我们的模型与Union2样本数据一致。

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