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2023 Fiscal Year Research-status Report

Research on Dispersive Equations and Harmonic Analysis

Research Project

Project/Area Number 18KK0073
Research InstitutionWaseda University

Principal Investigator

小澤 徹  早稲田大学, 理工学術院, 教授 (70204196)

Co-Investigator(Kenkyū-buntansha) 田中 和永  早稲田大学, 理工学術院, 教授 (20188288)
BEZ NEAL  埼玉大学, 理工学研究科, 教授 (30729843)
内田 俊  大分大学, 理工学部, 講師 (60777986)
湯浅 一哉  早稲田大学, 理工学術院, 教授 (90339721)
Project Period (FY) 2018-10-09 – 2025-03-31
Keywords分散方程式 / 漸近解析 / 調和解析 / 変分解析 / 函数解析
Outline of Annual Research Achievements

当該年度は研究代表者・分担者・協力者がピサ大学および早稲田大学に集まり、個別の問題に少人数で集中的に取り組むとともに、全体の会合において、研究成果・研究の進捗状況・途中経過・部分的成果・解決すべき課題等を披露し、活発に意見交換を行うとともに、今後の研究の方向性について検討を重ねた。
対数型相互作用をもつ非線型シュレディンガー方程式に関しては、弱解および強解の存在と一意性について従来の理論を大幅に見易い形に整備するとともに、一般論に繋がる新しい知見を得た。
微分型相互作用をもつ非線型シュレディンガー方程式に関しては、一次元トーラス上で強解の大域的存在を示し、永年の未解決問題を肯定的に解決した。
量子マスター方程式に関しては、「マクスウェルの悪魔」と呼ばれる現象の新たな定式化に、この方程式の解析が有効であることを見出し、電流制御の視点から理論体系を整備した。
流体の速度場を記述するブリンクマン・フォルシュハイマー方程式系として知られている二重拡散移流方程式系に関しては、3次元および4次元の全空間において、時間周期解の存在を示し、考える領域の有界性の条件が必ずしも本質的でないことを実証する形となった。
ハイパーグラフ上のラプラシアンに関しては、その発展方程式すなわちハイパーグラフ上の熱方程式に対して新しい知見を得た。また、作用素半群の超縮小性と対数型ソボレフ不等式の安定性を定式化し、その証明を与えた。

Current Status of Research Progress
Current Status of Research Progress

2: Research has progressed on the whole more than it was originally planned.

Reason

COVID-19の影響による規制は無くなったため、国外との往来が可能になり、海外の研究者と直接対面しての研究討論が再開されるようになってきた。おおむね順調に進んでいる。

Strategy for Future Research Activity

7月7日-12日にローマ・サピエンツァ大学にてINDAM Rome La Sapienza Universityにて開催される研究集会"Future perspectives on perturbative linear and non-linear modelling of contact-type interactions"(7/8-12)にGeorgiev教授とともに参加し、研究の成果を発表する。

Causes of Carryover

COVID-19の影響による規制は無くなったが数年に亙る渡航規制により直接対面しての研究討論が予定通りにはできなかったため、研究には大幅な遅れが生じた。さらに10月に足を怪我してしまい、予定していた海外出張を中止せざるを得なかったために次年度使用額が生じた。

  • Research Products

    (54 results)

All 2024 2023 Other

All Int'l Joint Research (6 results) Journal Article (10 results) (of which Int'l Joint Research: 5 results,  Peer Reviewed: 10 results,  Open Access: 6 results) Presentation (34 results) (of which Int'l Joint Research: 23 results,  Invited: 22 results) Book (3 results) Remarks (1 results)

  • [Int'l Joint Research] Nazarbayev University(カザフスタン)

    • Country Name
      KAZAKHSTAN
    • Counterpart Institution
      Nazarbayev University
  • [Int'l Joint Research] Gebze Technical University(トルコ)

    • Country Name
      TURKEY
    • Counterpart Institution
      Gebze Technical University
  • [Int'l Joint Research] Jeonbuk National University/Chung-Ang University(韓国)

    • Country Name
      KOREA (REP. OF KOREA)
    • Counterpart Institution
      Jeonbuk National University/Chung-Ang University
  • [Int'l Joint Research] University of Bari/University of Pisa(イタリア)

    • Country Name
      ITALY
    • Counterpart Institution
      University of Bari/University of Pisa
  • [Int'l Joint Research] Macquarie University(オーストラリア)

    • Country Name
      AUSTRALIA
    • Counterpart Institution
      Macquarie University
  • [Int'l Joint Research]

    • # of Other Countries
      1
  • [Journal Article] Refined Decay Estimate and Analyticity of Solutions to the Linear Heat Equation in Homogeneous Besov Spaces2023

    • Author(s)
      T. Ozawa, T. Takeuchi
    • Journal Title

      Journal of Fourier Analysis and Applications

      Volume: 29 Pages: -

    • DOI

      10.1007/s00041-023-10042-2

    • Peer Reviewed / Open Access
  • [Journal Article] Weighted estimates and large time behavior of small amplitude solutions to the semilinear heat equation2023

    • Author(s)
      R. Kusaba, T. Ozawa
    • Journal Title

      Differential Equations & Applications

      Volume: 15 Pages: 235~268

    • DOI

      10.7153/dea-2023-15-13

    • Peer Reviewed / Open Access
  • [Journal Article] Charge conjugation approach to scattering for the Hartree type Dirac equations with chirality2023

    • Author(s)
      Y. Cho, S. Hong, T. Ozawa
    • Journal Title

      Journal of Mathematical Physics

      Volume: 64 Pages: -

    • DOI

      10.1063/5.0118132

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Inverse problems of identifying the time-dependent source coefficient for subelliptic heat equations2023

    • Author(s)
      M. Ismailov, T. Ozawa, D. Suragan
    • Journal Title

      Inverse Problems and Imaging

      Volume: 0 Pages: -

    • DOI

      10.3934/ipi.2023056

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Rigorous analysis of the unified transform method and long-range instabilities for the inhomogeneous time-dependent Schr?dinger equation on the quarter-plane2023

    • Author(s)
      A. Chatziafratis, T. Ozawa, S.-F. Tian
    • Journal Title

      Mathematische Annalen

      Volume: - Pages: -

    • DOI

      10.1007/s00208-023-02698-4

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] A Deformation Theory in Augmented Spaces and Concentration Results for NLS Equations Around Local Maxima2023

    • Author(s)
      S. Cingolani, K. Tanaka
    • Journal Title

      Birkh\"{a}user/Springer

      Volume: - Pages: 309~331

    • DOI

      10.1007/978-3-031-20021-2_16

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Semi-classical Analysis Around Local Maxima and Saddle Points for Degenerate Nonlinear Choquard Equations2023

    • Author(s)
      S. Cingolani, K. Tanaka
    • Journal Title

      The Journal of Geometric Analysis

      Volume: 33 Pages: Paper No. 316

    • DOI

      10.1007/s12220-023-01367-x

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Quantum ergotropy and quantum feedback control2023

    • Author(s)
      Kenta Koshihara, Kazuya Yuasa
    • Journal Title

      Physical Review E

      Volume: 107 Pages: -

    • DOI

      10.1103/PhysRevE.107.064109

    • Peer Reviewed
  • [Journal Article] Stability of hypercontractivity, the logarithmic Sobolev inequality, and Talagrand's cost inequality2023

    • Author(s)
      N. Bez, S. Nakamura, H. Tsuji
    • Journal Title

      Journal of Functional Analysis

      Volume: 285 Pages: 110121~110121

    • DOI

      10.1016/j.jfa.2023.110121

    • Peer Reviewed
  • [Journal Article] Nonlinear evolution equation associated with hypergraph Laplacian2023

    • Author(s)
      M. Ikeda, S. Uchida
    • Journal Title

      Mathematical Methods in the Applied Sciences

      Volume: 46 Pages: 9463~9476

    • DOI

      10.1002/mma.9068

    • Peer Reviewed
  • [Presentation] Inequalities in the framework of equalities2024

    • Author(s)
      T. Ozawa
    • Organizer
      研究集会「幾何学的偏微分方程式に対する正則性特異性とその周辺」 Regularity and Singularity for Geometric PDE and related topics -in honor of Professor Masashi Misawa's 60th birthday-
    • Int'l Joint Research / Invited
  • [Presentation] Evolution equation with logarithmic nonlinearity2024

    • Author(s)
      T. Ozawa
    • Organizer
      Analysis Seminar @ University of Pisa
    • Int'l Joint Research / Invited
  • [Presentation] Embedding inequalities by the heat semigroup approach2024

    • Author(s)
      T. Ozawa
    • Organizer
      SDU life Workshop @ SDU University
    • Invited
  • [Presentation] ガリアルド・ニーレンバーグの不等式の熱半群による証明2024

    • Author(s)
      T. Ozawa
    • Organizer
      大阪公立大学数学研究所(OCAMI)共同利用研究集会
    • Int'l Joint Research / Invited
  • [Presentation] Semi-classical analysis around local maxima and saddle points for generalized nonlinear Choquard equations2024

    • Author(s)
      K. Tanaka
    • Organizer
      PDE seminar, Department of Mathematics, Swansea University
    • Int'l Joint Research / Invited
  • [Presentation] Semi-classical analysis for nonlinear Schr\"odinger equations and nonlinear Choquard equations in possibly degenerate settings2024

    • Author(s)
      K. Tanaka
    • Organizer
      PDE seminar, School of Mathematics, Cardiff University
    • Int'l Joint Research / Invited
  • [Presentation] Normalized solutions for nonlinear Schr\"odinger equations with $L^2$ critical nonlinearity2024

    • Author(s)
      K. Tanaka
    • Organizer
      PDE seminar, Department of Mathematical Sciences, University of Bath
    • Int'l Joint Research / Invited
  • [Presentation] Strong error bounds for Trotter & Strang Splittings and their implications to Quantum Chemistry2024

    • Author(s)
      Daniel Burgarth, Paolo Facchi, Alexander Hahn, Mattias Johnsson, and Kazuya Yuasa
    • Organizer
      87th Annual Conference of the DPG and DPG Spring Meeting
    • Int'l Joint Research
  • [Presentation] 量子熱力学における量子測定とフィードバック制御の効果2024

    • Author(s)
      越原健太、湯浅一哉
    • Organizer
      Quantum Foundations (芝浦工業大学)
  • [Presentation] Thermodynamics of Steady Heat Engines Driven by Quantum Measurement Backaction2024

    • Author(s)
      Kenta Koshihara, Kazuya Yuasa
    • Organizer
      Statistical & Quantum Physics Winter School 2024 (SQP2024)
  • [Presentation] Quantum Control of nano-diamond Nitrogen Vacancy spin ensembles2024

    • Author(s)
      Jemy Geordy, Alexander Hahn, Anirban Dey, Kazuya Yuasa, Daniel Burgarth, Sarath Raman Nair, and Thomas Volz
    • Organizer
      Quantum2024 Australia
    • Int'l Joint Research
  • [Presentation] Trotter Product Formula: Unexpected Scaling in Quantum Chemistry2024

    • Author(s)
      Daniel Burgarth, Paolo Facchi, Alexander Hahn, Mattias Johnsson, and Kazuya Yuasa
    • Organizer
      Quantum2024 Australia
    • Int'l Joint Research
  • [Presentation] Breaking badly: unexpected Trotter error scaling for realistic quantum systems2024

    • Author(s)
      Daniel Burgarth, Paolo Facchi, Alexander Hahn, Mattias Johnsson, and Kazuya Yuasa
    • Organizer
      Quantum Information Processing 2024 (QIP 2024)
    • Int'l Joint Research
  • [Presentation] An approximation of evolution equation with clique expansion of hypergraph Laplacian2024

    • Author(s)
      S. Uchida
    • Organizer
      2024日本数学会年会 実函数論分科会
  • [Presentation] Proof of the Gagliardo-Nirenberg Sobolev inequalities via heat semigroup2023

    • Author(s)
      T. Ozawa
    • Organizer
      Harmonic analysis and differential equations: new questions and challenges
    • Int'l Joint Research / Invited
  • [Presentation] Poincar\'eand Poincar\'e-Wirtinger inequalities, revisited2023

    • Author(s)
      T. Ozawa
    • Organizer
      Harmonic analysis and differential equations: new questions and challenges
    • Int'l Joint Research / Invited
  • [Presentation] 等式の枠組における不等式2023

    • Author(s)
      T. Ozawa
    • Organizer
      愛媛大学解析セミナー
    • Invited
  • [Presentation] Semi-classical states for nonlinear Choquard equations: Concentration around local maxima or saddle points in degenerate setting2023

    • Author(s)
      K. Tanaka
    • Organizer
      13th AIMS Conference on Dynamical Systems, Differential Equations and Applications
    • Int'l Joint Research / Invited
  • [Presentation] Variational Studies of Nonlinear Elliptic Problems2023

    • Author(s)
      K. Tanaka
    • Organizer
      International research programme, School of Mathematics and Statics, Northwestern Polytechnical University, 中国, によるオンライン連続講演, (6 回)
    • Int'l Joint Research / Invited
  • [Presentation] Trotter Product Formula: Unexpected Scaling in Quantum Chemistry2023

    • Author(s)
      Daniel Burgarth, Paolo Facchi, Alexander Hahn, Mattias Johnsson, and Kazuya Yuasa
    • Organizer
      EQUS Annual Workshop 2023
    • Int'l Joint Research
  • [Presentation] 量子測定による反跳の効果で駆動する定常熱サイクル2023

    • Author(s)
      越原健太、藤本大来、湯浅一哉
    • Organizer
      日本物理学会第78回年次大会 (東北大学)
  • [Presentation] Eternal Adiabaticity and Long-Term Stability of Perturbed Quantum Symmetries2023

    • Author(s)
      Kazuya Yuasa
    • Organizer
      Puglia Summer Trimester 2023 (PST2023): Conference
    • Int'l Joint Research / Invited
  • [Presentation] Eternal Adiabaticity and Long-Term Stability of Perturbed Quantum Symmetries2023

    • Author(s)
      Kazuya Yuasa
    • Organizer
      VI International Workshop on Information Geometry, Quantum Mechanics and Applications 2023
    • Int'l Joint Research
  • [Presentation] Eternal Adiabaticity and Long-Term Stability of Perturbed Quantum Symmetries2023

    • Author(s)
      Kazuya Yuasa
    • Organizer
      Mathematical Physics in Quantum Technology: From Finite to Infinite Dimensions (MPQT23) International Centre for Mathematical Sciences (ICMS)
    • Int'l Joint Research / Invited
  • [Presentation] A nonlinear Brascamp-Lieb inequality2023

    • Author(s)
      N. Bez
    • Organizer
      Asia-Pacific Analysis and PDE Seminar
    • Int'l Joint Research / Invited
  • [Presentation] Regularized Brascamp-Lieb inequalities2023

    • Author(s)
      N. Bez
    • Organizer
      Modern Trends in Harmonic Analysis
    • Int'l Joint Research / Invited
  • [Presentation] Nonlinear evolution equation associated with hypergraph Laplacian2023

    • Author(s)
      S. Uchida
    • Organizer
      第792回応用解析研究会
    • Invited
  • [Presentation] Nonlinear evolution equation associated with hypergraph Laplacian2023

    • Author(s)
      S. Uchida
    • Organizer
      The 13th AIMS Conference on Dynamical Systems, Differential Equations and Applications (Special Session No. 65)
    • Int'l Joint Research / Invited
  • [Presentation] Solvability of doubly nonlinear parabolic equation with p-Laplacian2023

    • Author(s)
      S. Uchida
    • Organizer
      The 13th AIMS Conference on Dynamical Systems, Differential Equations and Applications (Special Session No. 18)
    • Int'l Joint Research / Invited
  • [Presentation] ハイパーグラフラプラシアンを主要項とする非線型多価常微分方程式について2023

    • Author(s)
      S. Uchida
    • Organizer
      第188回神楽坂解析セミナー
    • Invited
  • [Presentation] ハイパーグラフラプラシアンを主要項とする非線形発展方程式について2023

    • Author(s)
      S. Uchida
    • Organizer
      第4回大同大学若手微分方程式セミナー
    • Invited
  • [Presentation] Sufficient condition of maximality of sum of monotone operators2023

    • Author(s)
      S. Uchida
    • Organizer
      2023日本数学会秋季総合分科会 実函数論分科会
  • [Presentation] Nonlinear set-valued ODE governed by hypergraph Laplacian2023

    • Author(s)
      S. Uchida
    • Organizer
      Workshop on Nonlinear Partial Differential Equations China-Japan Joint Project for Young Mathematicians 2023
    • Int'l Joint Research / Invited
  • [Presentation] ハイパーグラフラプラシアンのClique expansionを主要項とする近似方程式について2023

    • Author(s)
      S. Uchida
    • Organizer
      第49回発展方程式研究会
  • [Book] Collected Papers in Honor of Yoshihiro Shibata2023

    • Author(s)
      T. Ozawa (Ed.)
    • Total Pages
      394
    • Publisher
      Birkh\"auser
  • [Book] Qualitative properties of solutions to nonlinear parabolic problems - in honor of Professor Eiji Yanagida on the occasion of his 65th birthday -2023

    • Author(s)
      M. Fila, K. Ishige, T. Ozawa, and S. Shimizu (Eds.)
    • Total Pages
      -
    • Publisher
      SN Partial Differential Equations and Applications
  • [Book] Proceedings of 48th Sapporo Symposium on Partial Differential Equations2023

    • Author(s)
      S. Ei, Y. Giga, N. Hamamuki, S. Jimbo, H. Kubo, H. Kuroda, Y. Liu, T. Ozawa, T. Sakajo, K. Tsutaya and S. Masaki (Eds.)
    • Total Pages
      130
    • Publisher
      Hokkaido University Technical Report Series in Mathematics
  • [Remarks] 早稲田大学 理工学術院 先進理工学部 応用物理学科 小澤徹研究室

    • URL

      http://www.ozawa.phys.waseda.ac.jp/index2.html

URL: 

Published: 2024-12-25  

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