Tah Poe Seminar Series LII No.3 – 5

🛎 ขอเชิญเข้าร่วมฟังการบรรยาย #สัมมนาท่าโพธิ์ อนุกรมที่ 52 ลำดับที่ 3 – 5

📌 Day and Time : Thursday, October 20, 2022, 13:30~15:00
📌 Venue : The Academia Room (TA212), The Institute for Fundamental Study (no live broadcast)
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😺 Tah Poe Seminar Series 52 No.3 —————————–
📌 Speaker : Sakdithut Jitpienka, Ph.D.student. (IF, Naresuan Univ.), (ThEP and NARIT Research Assistant)
📌 Title : ” The Cosmological Tensions & Ways to Solve Them ”
📌 Abstract : In this presentation, the problem about the appearance of the incompatible values of $H_0$ and $ \sigma_8$ from different probes will be presented. Ideas to solve this problem will be also shown and discussed. Some proposed models which potentially alleviate this problem will be discussed as well.
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😺 Tah Poe Seminar Series 52 No.4 —————————–
📌 Speaker : Jakkrit Sangtawee , Ph.D.student. (IF, Naresuan Univ.), (DPST Scholar)
📌 Title : ” Cosmology in Cuscuton Model ”
📌 Abstract : Cuscuton model is a scalar field model in gravity. The existance of cuscuton does not increase the number of degrees of freedom of the system, such that the degrees of freedom of the system are still the same as Einstein gravity. Therefore, to construct the cuscuton model, we require that the cuscuton field is non-dynamical field but can modified the constraint equation in Einstein gravity. So that the cuscuton model plays the role of modified gravity instead of the scalar field model. This property can be obtained in homogeneous limit of cuscuton for a suitable form of the action. In the study of cosmological perturbation, it has been shown that on the small scales the perturbation of cuscuton field is suppressed. The curvature perturbation of cuscuton model can be frozen on the super-horizon scales.
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😺 Tah Poe Seminar Series 52 No.5 —————————–
📌 Speaker : Sompoach Saichaemchan , Ph.D.student. (IF, Naresuan Univ.), (RGJ Scholar)
📌 Title : ” Hidden Hand Investigation for Efficient Market Hypothesis ”
📌 Abstract : We investigate the historical data of S&P 500 stock market price data from 2000-2022 and construct the correlation-based threshold networks with different time windows. According to efficient market hypothesis (EMH), the price of goods are changed by effect of information transferring through the whole market as long as the information can flow without restrictions then the price will be closely random fluctuated. However, the real-world situations, such as high value market, can’t be efficient market because various obstacles of information flows. We calculate one-parameter communicability matrix which proposed by statistical mechanics and focus on financial crisis periods.
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