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今後2週間の予定

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※下記のセミナーの他に新着論文紹介のセミナー(10:00-10:30)が、月曜日、水曜日、金曜日にあります。場所は4号館ピロティです。

2020-07-16 (木) 宇宙物理学セミナー
    UTAPwiki/セミナー/宇宙物理学セミナー Speaker: Yusuke Yamada Title: Quantum tunneling and related phenomena Abstract:
    Quantum tunneling is a hallmark of nonclassical physics. Such a phenomenon is relevant to microscopic physics to cosmology. In this talk, I will briefly review examples of tunneling phenomena mostly in cosmology. In tunneling phenomena, the notion of decay rate of a state is one of the most important quantities. I will review how the decay rate is precisely defined and computed in a modern way. For simplicity, I will discuss it in quantum mechanics, but the formulation is straightforwardly applied to quantum field theory as well. I will discuss several topics, but the topic discussed in detail is based on the following paper : A. Andreassen, D. Farhi, W. Frost, M. D. Schwartz, Phys.Rev.D 95 (2017) 8, 085011 ※Notice: This is scheduled to be the last seminar in this semester.

2020-07-20 (月) 初期宇宙・相対論速報
    UTAPwiki/セミナー/初期宇宙・相対論速報 Attracted by Particle Production † ↑Soichiro Hashiba † Whenever a value of field changes, particles coupled with this background field are produced. This particle production is quite universal and it can induce considerable backreaction by extracting the energy of the background field. In other words, this particle production behaves as a kind of attractive force. By using this effect, we can trap the background field at a certain point where coupled particles are produced most efficiently. In this talk, I will explain the mechanism of field trapping by particle production and then introduce several applications, moduli trapping and trapped inflation.
    This talk is mainly based on the following references. References:
    [1] L. Kofman et al., JHEP 05 (2004) 030.
    [2] N. Itzhaki and E. Kovetz, JHEP 10 (2007) 054.
    [3] D. Green et al., Phys. Rev. D 80 (2009) 063533.

2020-07-20 (月) 観測的宇宙論速報
    UTAPwiki/セミナー/観測的宇宙論速報
    担当者:Hajime Fukushima (Tsukuba)
    時間 :10:30-12:00
    場所 :理学部4号館ピロティ前セミナー室
    内容:添付ファイル [添付] 参照 Author(s)TitleYear, Journal,Number(,Link)Y. SutoJinsei Ippan ni Sotairon2010, ISBN978-4-13-063354-3


セミナー週間予定

10111213141516
新着論文@ピロティ/arXiv Seminar観測的宇宙論速報/ Observational Cosmology Journal Club初期宇宙・相対論速報
新着論文@ピロティ/arXiv Seminar
ランチセミナー/ Lunch Seminar昼食会/ Lunch Seminar宇宙物理学セミナー/ Astrophysics Cosmology Seminar
新着論文@ピロティ/arXiv Seminar天体核セミナー


UTAPゼミ週間予定

10111213141516
4年生理論演習
須藤研M1ゼミ
ラジプロゼミ



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