论文标题
用广义Proca理论减少$ H_ {0} $张力
Reducing the $H_{0}$ tension with generalized Proca theory
论文作者
论文摘要
我们研究了广义PROCA理论的宇宙生存能力。我们首先在Boltzmann代码中实现了运动的背景和线性扰动方程，然后在运行MCMC对宇宙学数据集后对广义PROCA理论的参数进行限制。使用Planck + HST数据，我们获得了约束$ H = 0.7334 _ { - 0.0269}^{ + 0.0246} $，这表明该理论中早期宇宙和后期宇宙之间的张力被删除。通过添加其他延迟数据集（BAO，RSD等），我们表明张力减少了，因为Proca中的2 $σ$允许的区域允许$ H $，$ H = 0.7041 _ { - 0.0087}^{+0.0094} $，与HST数据的2 $σ$区域重叠。
We investigate the cosmological viability of the generalized proca theory. We first implement the background and linear perturbation equations of motion in the Boltzmann code and then study the constraints on the parameters of the generalized proca theory after running MCMC against the cosmological data set. With Planck + HST data, we obtain the constraint $h=0.7334_{-0.0269}^{+0.0246}$, which indicates that the tension between early universe and late time universe within this theory is removed. By adding other late-time data sets (BAO, RSD, etc.) we show that the tension is reduced, as the 2$σ$ allowed region for $h$ in Proca, $h=0.7041_{-0.0087}^{+0.0094}$, overlaps with the 2$σ$ region of the HST data.
