## Title: *PAge approximation and its cosmological application*
## Reporter: Yong Zhou
| 12.22 | 10.00 AM | 6420 | Yu-Shi Hao |
## Title: *Inflation with R(αβ) terms in the Palatini formulation*
## Reporter: Yu-Shi Hao
## Abstract
In this talk, I will introduce a Parameterization based on the cosmic Age (PAge) approximation and its application to cosmological observations.
In this paper, the authors talk about the inflation in f(R) gravity witn high order R(αβ),and give the spectrum and tensor-to-scalar ratio with cubic action.
## References
-[Arxiv:2001.06926](https://arxiv.org/abs/2001.06926)*Supernova Magnitude Evolution and PAge Approximation* by *Zhiqi Huang*.
-[Arxiv:2008.00487](https://arxiv.org/abs/2008.00487)*Reaffirming the Cosmic Acceleration without Supernova and CMB* by *Xiaolin Luo* et al.
-[Arxiv:2012.02474](https://arxiv.org/abs/2012.02474)*Reconciling low and high redshift GRB luminosity correlations* by *Lu Huang* et al.
-[Arxiv:2107.13286](https://arxiv.org/abs/2107.13286)*A No-Go guide for the Hubble tension* by *Rong-Gen Cai* et al.
-[Arxiv:2108.03959](https://arxiv.org/abs/2108.03959)*A More Accurate Parameterization based on cosmic Age (MAPAge)* by *Lu Huang* et al.
-[Arxiv:2110.08498](https://arxiv.org/abs/2110.08498)*The S8 Tension in Light of Updated Redshift-Space Distortion data* by *Lu Huang* et al.
-[arxiv:2106.12422](https://arxiv.org/abs/2106.12422)*Inflation with R(αβ) terms in the Palatini formulation* by *Jaakko Annala* and *Syksy Rasanen*
In this seminar, some work progress about holographic superconductor from superstrings will be introduced. A non zero-temperature superconducting black hole was constructed and a critical temperature, below which a charged condensate forms with a second order phase transition, is finded. we generalize the no inner Cauchy horizon theorem to the theory of Stückelberg form and can easily prove that there is no inner Cauchy horizon for those kinds of models. Besides, the dynamics are analyzed both inside and outside the event horizon. The existence of Kasner structure is also proved. Then, he holographic complexity in superconductors from superstrings was computed to understand the quantum gravity effect via the quantum information approach. Finally, we give some discussions about the results and look foward to the future.