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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。

2020-05-25 (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:Mitani
    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 JC_mitani_0525.pdf?dl=0 参照 Author(s)TitleYear, Journal,Number(,Link)Ehrenreich D., et al.Nightside condensation of iron in an ultra-hot giant exoplanet2020, Nature 580 597Wyttenbach A., et al.Mass loss rate and local thermodynamic state of KELT-9 b thermosphere from the hydrogen Balmer series2020, arXiv:2004.13733 Lothringer J. D., Barman T.The Influence of Host Star Spectral Type on Ultra-hot Jupiter Atmospheres2019, ApJ 876 69

2020-05-25 (月) 初期宇宙・相対論速報
    UTAPwiki/セミナー/初期宇宙・相対論速報 Quantum entanglement in the early Universe † ↑Kouki Tokeshi † The quantum state becomes squeezed after inflation due to cosmological perturbations, and hence there exists quantum entanglement. In this talk, we start with the simplest example which shows quantum entanglement, and see the relation between Hawking temperature of a BH and the entangled particle pair near the horizon, in the viewpoint of themo field dynamics (TFD). After these examples, we consider the quantum squeezed state after inflation, and from the result we finally draw some implications on PBHs. Refs.
    [1] A. Albrecht et al., PRD 50 (1994) 4807 [astro-ph/9303001]
    [2] T. Prokopec, Class. Quantum Grav. 10 (1993) 2295-2306
    [3] M. Hashizume and M. Suzuki, Physica A 392 (2013) 3518-3530 [cond-mat/1305.4679]
    [4] L. Espinosa-Portalés and J. García-Bellido, PRD 101 (2020) 043514 [gr-qc/1907.07601]

2020-05-28 (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: Masamune Oguri Title: Compartmental models in epidemiology Abstract:
    I will review the basics of compartmental models in epidemiology, focusing on understanding of their qualitative behaviors. I will then discuss some implications for COVID-19.

2020-06-01 (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:Yuting
    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

2020-06-01 (月) 初期宇宙・相対論速報
    UTAPwiki/セミナー/初期宇宙・相対論速報 † ↑Jun'ichi Yokoyama †

2020-06-04 (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: Kazumi Kashiyama Title: Fast radio bursts and related phenomena Abstract:
    Fast radio bursts (FRBs) are an enigmatic phenomenon; trains of
    coherent radio waves are arriving from a cosmological distance for a
    millisecond. In this talk I will first review the evolution of FRB
    research since its discovery in 2007. The most promising source of FRB
    is neutron star (NS). In fact, very recently a low-luminosity FRB has
    been detected from a strongly magnetized NS, SGR 1935+2154,
    simultaneously with an X-ray flare. Focusing on the NS model, I will
    describe the theoretical insights and challenges that such
    observational achievements have implied : “What is the emission
    mechanism of FRB?”, “What type of NSs can be the source of FRB?”, and
    “How such NSs are formed with what type of explosive transients?”.
    Finally I will discuss prospects and strategies to provide a
    comprehensive answer to these questions.


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10111213141516
4年生理論演習
須藤研M1ゼミ



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Last-modified: 2020-03-24 (火) 14:17:26 (62d)