本文章最後由 iheby 於 2017-1-23 23:07 編輯
高階重力希格斯-湯川模型的漸近穩妥性 @香港科技大學高等研究院
SEMINAR:- Asymptotic Safety of Higgs-Yukawa Model with Higher Derivative Gravity
The speaker studies the Higgs-Yukawa model coupled to the higher derivative gravity, which includes operators up to dimension 4. Using the functional renormalization group, he obtains the beta functions for the cosmological and Newton constants, the coefficients of higher derivative gravity terms, the scalar mass-squared and quartic coupling constant, and the Yukawa and non-minimal coupling constants. He finds that there exists non-trivial fixed point, and analyzes the structure around it.
時間：2017.01.27(五) 12:00
地點：香港科技大學 李兆基校園 盧家驄薈萃樓4樓 高研院2042室
講者：Dr Yuta Hamada (University of Wisconsin-Madison)
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【講者】
帶扭異超重力模型中的暴脹 @香港科技大學高等研究院
SEMINAR:- Inflation in Heterotic Supergravity Models with Torsion
Recently it has been shown that in compactifications of heterotic string theory, all moduli can be stabilized perturbatively in the following case: if the compactification has intrinsic torsion, allowing for a superpotential linear in the Kahler moduli; and furthermore if anomalous U(1) symmetries are present such that they produce a particular D-term structure known as “aligned D-terms”. In this talk, the speaker will discuss some approaches to realizing inflation in such a context, beginning with some illustrative toy examples before exploring various scenarios, such as aligned natural inflation and axion monodromy inflation. He will also compare the benefits and drawbacks of each approach, and review some general issues that need to be resolved.
時間：2017.01.27(五) 10:00
地點：香港科技大學 李兆基校園 盧家驄薈萃樓4樓 高研院2042室
講者：Dr Stephen Angus (Institute for Basic Science)
免費會議，歡迎參加
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