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SUMMARY:Emergence of Classical and Quantum Spacetimes in IKKT Matrix Model
 s
DTSTART;VALUE=DATE-TIME:20260722T061500Z
DTEND;VALUE=DATE-TIME:20260722T073000Z
DTSTAMP;VALUE=DATE-TIME:20260816T102000Z
UID:indico-event-227@indico.nitep.omu.ac.jp
DESCRIPTION:Date: July 22\, 2026\nTime: 15:15-16:30\nPlace: 杉本キャ
 ンパス 理学部E棟1階E101室\n(This is an on-site seminar\, and wil
 l not be broadcasted on Zoom.)\n\nSpeaker: Cheng-Tsung WANG (KEK/SOKENDAI)
 \nTitle: Emergence of Classical and Quantum Spacetimes in IKKT Matrix Mode
 ls\n\nAbstract:\nThe Ishibashi-Kawai-Kitazawa-Tsuchiya (IKKT) matrix model
  is a promising nonperturbative formulation of type IIB superstring theory
 \, in which spacetime is expected to emerge dynamically from the distribut
 ion of matrix eigenvalues\, which are interpreted as the positions of D-in
 stantons. Understanding how these matrix degrees of freedom organize into 
 different spacetime structures is one of the central questions in the mode
 l. \nIn this talk\, I will present a series of recent works that address 
 this question from several complementary perspectives. I will first discus
 s the supersymmetric mass-deformed (polarized) IKKT model with Monte-Carlo
  numerical method\, which reveal the interplay among fuzzy-sphere\, IKKT\,
  and commuting-matrix saddle configurations and their implications for eme
 rgent spacetime. \nI will then show how the Wilson loop in two-dimensiona
 l bosonic IKKT (Hoppe) matrix model reproduces continuum Yang-Mills theory
  through large-N reduction. Finally\, we move on to the higher-dimensional
  bosonic IKKT model\, where recent progress sheds new light on the nonpert
 urbative dynamics of D-instantons and the microscopic structure of quantum
  spacetime.\nTogether\, these studies illustrate how the dynamics of matri
 x eigenvalues provides a unified framework for understanding the emergence
  of both classical and quantum spacetime in IKKT matrix models.\n\nSlides:
  (ChenTsungWang)nitepseminarOSAKA3.pdf\nhttps://indico.nitep.osaka-cu.ac.j
 p/event/227/
LOCATION:
URL:https://indico.nitep.osaka-cu.ac.jp/event/227/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Does Hawking Radiation Survive Beyond the Scrambling Time?
DTSTART;VALUE=DATE-TIME:20260722T080000Z
DTEND;VALUE=DATE-TIME:20260722T091500Z
DTSTAMP;VALUE=DATE-TIME:20260816T102000Z
UID:indico-event-230@indico.nitep.omu.ac.jp
DESCRIPTION:Date: July 22\, 2026\nTime: 17:00-18:15\nPlace: 杉本キャ
 ンパス 理学部E棟1階E101室\n(This is an on-site seminar\, and wil
 l not be broadcasted on Zoom.)\n\nSpeaker:  Wei-Hsiang Shao (RIKEN iTHEMS
 )\nTitle: Does Hawking Radiation Survive Beyond the Scrambling Time?\n\nAb
 stract:\nIt is widely assumed that the standard Hawking radiation persists
  as long as a black hole remains much larger than the Planck length. In th
 is talk\, I will explore how UV physics can nevertheless dramatically modi
 fy the conventional properties of Hawking radiation\, even in this semicla
 ssical regime.\nIn particular\, I will show that nonlocal UV features expe
 cted in quantum gravity (and especially in string theory) can render Hawki
 ng radiation a transient phenomenon that is largely suppressed after the s
 crambling time\, much earlier than the conventionally expected black hole 
 lifetime. This suggests a major departure from the usual picture of black 
 hole evaporation and may offer fresh insight into alternative resolutions 
 of the information paradox.\n\nSlides: (WeiHsiang SHAO) NITEP Seminar.pdf
 \nhttps://indico.nitep.osaka-cu.ac.jp/event/230/
LOCATION:
URL:https://indico.nitep.osaka-cu.ac.jp/event/230/
END:VEVENT
BEGIN:VEVENT
SUMMARY:第12回関西核多体セミナー
DTSTART;VALUE=DATE-TIME:20260724T063000Z
DTEND;VALUE=DATE-TIME:20260724T080000Z
DTSTAMP;VALUE=DATE-TIME:20260816T102000Z
UID:indico-event-222@indico.nitep.omu.ac.jp
DESCRIPTION:第12回関西核多体セミナー\n\n・日時：2026年7月
 24日（金）15:30 開始（開始時刻が変更されました）\n\n\n
 ・会場：京都大学理学研究科セミナーハウス\n  こちら
 の吉田キャンパスの地図の10番です。\n  アクセス | 京
 都大学理学研究科・理学部\n\n・講演者：鵜沢 浩太朗  
 さん（日本原子力研究開発機構）\n\n・タイトル：「生
 成座標法を応用した核反応理論：非平衡グリーン関数
 法とMito-Kamimura法」  \n``Nuclear Reaction Theory Based on the Gener
 ator Coordinate Method: The Non-Equilibrium Green's Function Method and th
 e Mito–Kamimura Method"\n\n・アブストラクト：\nIn fusion and fi
 ssion reactions\, nuclear shapes undergo large-amplitude changes\, and sin
 gle-particle excitations are induced through the dissipation of collective
  energy. Developing a theoretical framework that consistently incorporates
  these effects remains an important challenge in nuclear reaction theory.\
 nIn this talk\, I address this problem by extending the generator coordina
 te method (GCM) to include single-particle excitations and by connecting i
 t to appropriate scattering boundary conditions. To this end\, I introduce
  a formulation based on the non-equilibrium Green's function method for in
 duced fission reactions\, together with a formulation based on the Mito–
 Kamimura method for fusion reactions. Finally\, I present recent applicati
 ons of these formalisms to nuclear fission and fusion reactions\, such as 
 236U(gamma\, fission) or 16O+16O collision.\nhttps://indico.nitep.osaka-cu
 .ac.jp/event/222/
LOCATION:
URL:https://indico.nitep.osaka-cu.ac.jp/event/222/
END:VEVENT
BEGIN:VEVENT
SUMMARY:南部研究所大阪城セミナー（第５回）
DTSTART;VALUE=DATE-TIME:20260829T050000Z
DTEND;VALUE=DATE-TIME:20260829T090000Z
DTSTAMP;VALUE=DATE-TIME:20260816T102000Z
UID:indico-event-231@indico.nitep.omu.ac.jp
DESCRIPTION:日時：2026年8月29日（土）14:00〜18:00\n会場：大
 阪公立大学 森之宮キャンパス 中教室404\n講演者：丸 信
 人 氏（大阪公立大学・南部陽一郎物理学研究所）\n題
 名：Gauge-Higgs\, GUT and Family unification\n概要：\n高次元理論
 において標準模型ヒッグス場とゲージ場を統一するゲ
 ージ・ヒッグス統一理論を、大統一理論および世代統
 一理論へ拡張する試みについて紹介する。\nhttps://indico.
 nitep.osaka-cu.ac.jp/event/231/
LOCATION:大阪公立大学 森之宮キャンパス
URL:https://indico.nitep.osaka-cu.ac.jp/event/231/
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