Advanced Computing Platform for Theoretical Physics

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# Latest Journal Club
| Data | Time | Place | Reporter|
| --- | --- | --- | --- |
| 12.9 | 10.00 AM | 6420 | Yong Zhou |
## 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*
## Interesting papers in this week
## Join us
课题组 邀请您参加腾讯会议
会议主题:journal club
会议时间:2021/12/09 10:00-12:30 (GMT+08:00) 中国标准时间 - 北京
会议主题:Journal Club
会议时间:2021/12/23 10:00-12:30 (GMT+08:00) 中国标准时间 - 北京
点击链接入会,或添加至会议列表:
https://meeting.tencent.com/dm/StgecmfmuUpk
https://meeting.tencent.com/dm/2ocfv96jXhmp
#腾讯会议:321-488-078
#腾讯会议:131-417-686
会议密码:1234
手机一键拨号入会
+8675536550000,,321488078# (中国大陆)
+85230018898,,,2,321488078# (中国香港)
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+85230018898,,,2,131417686# (中国香港)
根据您的位置拨号
+8675536550000 (中国大陆)
......@@ -65,11 +61,11 @@ https://meeting.tencent.com/dm/StgecmfmuUpk
# Latest Group Siminar
| Data | Time | Place | Reporter|
| --- | --- | --- | --- |
| 12.16 | 2.30 PM | 6420 | Fu-Guo Yang |
## Title: * *
## Reporter: Fu-Guo Yang
| 12.22 | 2.30 PM | 6420 | Teng Ji |
## Title: *非晶固体中的非线性弹性响应、屈服效应和熵*
## Reporter: Teng Ji
## Abstract
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.
剪切硬化效应(剪切模量随着应变的增加而增加)以及屈服效应(材料开始发生宏观塑性变形时,出现应力明显降低的现象)在非晶固体中是非常普遍的。已有研究发现,在某些非晶固体(如:聚合物以及靠近阻塞(jamming)的高密度硬球胶态玻璃)中,剪切硬化效应往往伴随着熵减。然而在我们的模拟研究过程中发现了一种新的现象,那就是伴随着熵增的剪切硬化效应。为了理解这一现象,我们用引力-规范对偶理论构造出了满足非晶固体对称性的有效拉氏量,从而在理论层面解释了这一现象产生的原因,这是其一。其二,不同非晶材料的屈服点与退火(annealing)程度的相关性各不相同。我们的模拟结果给出的二者关系为负相关,这一现象从我们构造出的有效拉氏量也可以定性的给出解释。
## References
<!-- - [Arxiv:2110.14718](https://arxiv.org/abs/2110.14718) *Cosmic inflation from broken conformal symmetry* by *Rong-Gen Cai, Yu-Shi Hao* and *Shao-Jiang Wang*. -->
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