Advanced Computing Platform for Theoretical Physics

Commit 150249dc authored by wangwei yu's avatar wangwei yu
Browse files

Update README.md

parent a580747f
......@@ -25,30 +25,30 @@
# Latest Journal Club
| Data | Time | Place | Reporter|
| --- | --- | --- | --- |
| 11.18| 10.00 AM | 6420 | Cheng-Jie Fu |
## Title: *Lattice Simulations of Abelian Gauge Fields coupled to Axion during Inflation*
## Reporter: Cheng-Jie Fu
| 11.25| 10.00 AM | 6420 | Gong Cheng |
## Title: *Cross-correlating Astrophysical and Cosmological Gravitational Wave Backgrounds with the Cosmic Microwave Background*
## Reporter: Gong Cheng
## Abstract
In this talk, I will introduce the non-linear lattice simulation for a model of axion inflation where the inflaton is coupled to a U(1) gauge field through Chern-Simons interaction.
In this letter the authors explore the cross-correlation of the cosmological and astrophysical SGWBs with CMB anisotropies, showing that future GW detectors, such as LISA or BBO, have the ability to measure such cross-correlation signals. Also, they present constrained realization maps of the SGWBs extracted from the high-resolution CMB Planck maps. This technique allows, in the low-noise regime, to faithfully reconstruct the expected SGWB map by starting from CMB measurements.
## References
- [Arxiv:2110.10695](https://arxiv.org/abs/2110.10695) *Lattice Simulations of Abelian Gauge Fields coupled to Axion during Inflation* by *Angelo Caravano* at al.
- [Arxiv:2106.02591](https://arxiv.org/abs/2106.02591) *Cross-correlating Astrophysical and Cosmological Gravitational Wave Backgrounds with the Cosmic Microwave Background* by *A. Ricciardone* at al.
## 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:2021/11/18 10:00-12:30 (GMT+08:00) 中国标准时间 - 北京
会议时间:2021/11/25 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/7fbR634JW1md
https://meeting.tencent.com/dm/KTnAuc3pYiqo
会议ID:913 343 800
腾讯会议:736-733-716
会议密码:1234
手机一键拨号入会
+8675536550000,,913343800# (中国大陆)
+85230018898,,,2,913343800# (中国香港)
+8675536550000,,736733716# (中国大陆)
+85230018898,,,2,736733716# (中国香港)
根据您的位置拨号
+8675536550000 (中国大陆)
......@@ -57,18 +57,19 @@ https://meeting.tencent.com/dm/7fbR634JW1md
复制该信息,打开手机腾讯会议即可参与
# Latest Group Siminar
| Data | Time | Place | Reporter|
| --- | --- | --- | --- |
| 11.18 | 2.30 PM | 6420 | Yota Watanabe |
## Title: *On the integrability conjecture during transient resonance in extreme-mass-ratio inspirals*
## Reporter: Yota Watanabe
| 11.25 | 2.30 PM | 6420 | Shao-Jiang Wang |
## Title: *Cosmic inflation from broken conformal symmetry*
## Reporter: Shao-Jiang Wang
## Abstract
An extreme-mass-ratio inspiral is driven by the self-force and may encounter the r-theta resonance when the ratio of its radial and polar frequencies are rational. There is a conjecture which states that the r-theta transient resonance is driven not by the conservative but by the dissipative self-force. This so-called integrability conjecture is still the subject of controversy in the literature. In this group seminar, I will argue to disprove this conjecture.
A period of rapidly accelerating expansion is expected in the early Universe implemented by a scalar field slowly rolling down along an asymptotically flat potential preferred by the current data. In this paper, we point out that this picture of the cosmic inflation with an asymptotically flat potential could emerge from the Palatini quadratic gravity by adding the matter field in such a way to break the local gauged conformal symmetry in both kinetic and potential terms. The metric Einstein gravity with a positive cosmological constant could be recovered either in the absence of the matter field or by adding the matter field in a way that preserves the local gauged conformal symmetry.
## References
<!-- - [Arxiv:2101.01282](https://arxiv.org/abs/2101.01282) *A cuspy dark matter halo* by *Yong Shi* et al.
- [Arxiv:2109.01402](https://arxiv.org/abs/2109.01402) *A shallow dark matter halo in Ultra Diffuse Galaxy AGC 242019: are UDGs structurally similar to low surface brightness galaxies?* by *Chris B.Brook* et al. -->
- [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*.
<!-- - [Arxiv:2109.01402](https://arxiv.org/abs/2109.01402) *A shallow dark matter halo in Ultra Diffuse Galaxy AGC 242019: are UDGs structurally similar to low surface brightness galaxies?* by *Chris B.Brook* et al. -->
# ITP-CAS Gravity and Cosmology Seminar:
| Data | Time | Place |
......
Markdown is supported
0% or .
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment