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Study on blowup phenomena for Shcr\"odinger equations with non-gauge invariant power type nonlinearities

Research Project

Project/Area Number 20K14337
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 12020:Mathematical analysis-related
Research InstitutionRyukoku University (2023)
Nagoya University (2020-2022)

Principal Investigator

Fujiwara Kazumasa  龍谷大学, 先端理工学部, 准教授 (40868262)

Project Period (FY) 2020-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2022: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2021: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2020: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywords爆発解析 / 初期値問題 / 分散型方程式 / 時間大域可解性 / 消散型波動方程式 / 冪乗型自己相互作用 / 大域解析 / 分数階微分作用素 / 臨界尺度 / 半波動方程式 / シュレーディンガー方程式 / 周期境界条件 / 非ゲージ不変性 / 有限時刻爆発 / 必要充分条件 / シュレディンガー方程式 / 絶対値冪乗型非線型項 / 解の爆発現象
Outline of Research at the Start

非線型シュレディンガー方程式の初期値問題に対して、初期状態の形状が及ぼす解への影響を解明する。非線型シュレディンガー方程式の解の挙動は概して、波束を分散させる分散効果と波束を集約させる自己相互作用から複合的に決定される。そして自己相互作用による増幅が分散効果を圧倒する場合、解は自己崩壊する。本研究では、絶対値冪乗型の非線型項に表される自己相互作用に着目する。この自己相互作用は位相の効果を伴わない為、解の爆発現象を誘発する典型例であるが、初期状態の形状が及ぼす解への影響は充分に検討されてこなかった。この為、解の爆発現象に対する初期状態の分類を完成させ、初期状態の形状による解への影響を解明する。

Outline of Final Research Achievements

In this study, we have completed the classification of integrable initial conditions for the global time solvability of solutions to the one-dimensional semi-linear Schr\"odinger equation under periodic boundary conditions. Particularly, a singular instability concerning initial conditions has been identified, wherein finite-time blow-up phenomena of solutions occur due to oscillations in the initial state, no matter how small they are. Additionally, in the case of two dimensions, a significant inhibitory effect on solutions due to interactions between frequency components has been observed, suggesting the potential stabilization of initial value dependency of solutions in higher dimensions.

Furthermore, we have relaxed the technical requirements for evaluating the maximum existence time of solutions to semi-linear damped wave equations and derived a precise evaluation of the maximum existence time of solutions when the integral average of the initial state is zero.

Academic Significance and Societal Importance of the Research Achievements

本研究における学術的な意義は、従来の解析手法では不可欠であった初期状態に対する積分平均の符号条件を緩和した事にある。従来の解析手法は、複雑な非線型効果による解の増大の様相を、解の積分量に着目する事で要約していた。一方で、本研究ではシュレーディンガー方程式や消散型波動方程式の初期状態の振動の影響を考慮する事で、方程式の非線型効果に対して一歩踏み込んだ理解を与えた。特に、本研究で解明した初期状態の振動が与える解の挙動への影響は、計算シュミレーションによる観測が困難なものであり、純粋数学による解析手法の効果を示す一例を提示できた。

Report

(5 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (33 results)

All 2024 2023 2022 2021 2020 Other

All Int'l Joint Research (1 results) Journal Article (11 results) (of which Int'l Joint Research: 6 results,  Peer Reviewed: 11 results,  Open Access: 4 results) Presentation (19 results) (of which Int'l Joint Research: 5 results,  Invited: 19 results) Remarks (1 results) Funded Workshop (1 results)

  • [Int'l Joint Research] Pisa大学(イタリア)

    • Related Report
      2022 Research-status Report
  • [Journal Article] Lifespan estimates for 1d damped wave equation with zero moment initial data2024

    • Author(s)
      K. Fujiwara and V. Georgiev
    • Journal Title

      Journal of Mathematical Analysis and Applications

      Volume: -

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] On extended lifespan for 1d damped wave equation2024

    • Author(s)
      K. Fujiwara and V. Georgiev
    • Journal Title

      Mathematical Methods in Applied Sciences

      Volume: -

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] A new class of small initial data which may shift the critical power and lifespan estimates for the classical damped wave equations2023

    • Author(s)
      K. Fujiwara and V. Georgiev
    • Journal Title

      Evolution Equations and Control Theory

      Volume: 12 Issue: 4 Pages: 1122-1132

    • DOI

      10.3934/eect.2023003

    • Related Report
      2023 Annual Research Report 2022 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Lifespan estimates of 1D non-gauge invariant semilinear semirelativistic equations2022

    • Author(s)
      Fujiwara Kazumasa
    • Journal Title

      Applied Mathematics Letters

      Volume: 124 Pages: 107619-107619

    • DOI

      10.1016/j.aml.2021.107619

    • Related Report
      2022 Research-status Report 2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Note on the lifespan estimate of solutions for non-gauge invariant semilinear massless semirelativistic equations with some scaling critical nonlinearity2022

    • Author(s)
      Fujiwara Kazumasa
    • Journal Title

      Journal of Evolution Equations

      Volume: 23 Issue: 1

    • DOI

      10.1007/s00028-022-00865-9

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Remark on the Chain rule of fractional derivative in the Sobolev framework2022

    • Author(s)
      Fujiwara Kazumasa
    • Journal Title

      Math. Inequal. Appl.

      Volume: -

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] On the Cauchy problem for a class of semilinear second order evolution equations with fractional Laplacian and damping2021

    • Author(s)
      Fujiwara Kazumasa、Ikeda Masahiro、Wakasugi Yuta
    • Journal Title

      Nonlinear Differential Equations and Applications NoDEA

      Volume: 28 Issue: 6

    • DOI

      10.1007/s00030-021-00723-6

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] On global existence of <i>L</i><sup>2</sup> solutions for 1D periodic NLS with quadratic nonlinearity2021

    • Author(s)
      Fujiwara Kazumasa、Georgiev Vladimir
    • Journal Title

      Journal of Mathematical Physics

      Volume: 62 Issue: 9 Pages: 091504-091504

    • DOI

      10.1063/5.0033101

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] A test function method for evolution equations with fractional powers of the Laplace operator2021

    • Author(s)
      D’Abbicco M.、Fujiwara K.
    • Journal Title

      Nonlinear Analysis

      Volume: 202 Pages: 112114-112114

    • DOI

      10.1016/j.na.2020.112114

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Self-similar solutions to the derivative nonlinear Schr\"odinger equation2020

    • Author(s)
      Fujiwara Kazumasa、Georgiev Vladimir、Ozawa Tohru
    • Journal Title

      Journal of Differential Equations

      Volume: 268 Issue: 12 Pages: 7940-7961

    • DOI

      10.1016/j.jde.2019.11.089

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] On global well-posedness for nonlinear semirelativistic equations in some scaling subcritical and critical cases2020

    • Author(s)
      Fujiwara Kazumasa、Georgiev Vladimir、Ozawa Tohru
    • Journal Title

      J. Math. Pures Appl.

      Volume: 136 Pages: 239-256

    • DOI

      10.1016/j.matpur.2019.10.003

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] Lifespan estimate for classical damped wave equations with some initial data2024

    • Author(s)
      藤原和将
    • Organizer
      京都大学NLPDEセミナー
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] Lifespan estimate for classical damped wave equations with some initial data2023

    • Author(s)
      藤原和将
    • Organizer
      鳥取PDE研究集会2023
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] Lifespan estimate for classical damped wave equations with some initial data2023

    • Author(s)
      藤原和将
    • Organizer
      ICIAM 2023
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 或る初期値に対する消散型波動方程式の爆発時刻の評価2023

    • Author(s)
      藤原和将
    • Organizer
      京都駅前セミナー
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] Remark on the lifespan of semilinear classical damped wave equation2023

    • Author(s)
      Fujiwara Kazumasa, Vladimir Georgiev
    • Organizer
      Analysis Seminar Pisa University
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] A lifespan estimate for semilinear classical damped wave equations2023

    • Author(s)
      Fujiwara Kazumasa, Vladimir Georgiev
    • Organizer
      Geometric Analysis in Harmonic Analysis and PDE
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Necessary and sufficient condition of L^2 global existence for a periodic nonlinear Scho:dinger equation2022

    • Author(s)
      Fujiwara Kazumasa, Vladimir Georgiev
    • Organizer
      Webinar Critical exponent versus blow-up in evolution models
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] 或る初期条件に対する半線型消散型波動方程式の存在時刻の評価2022

    • Author(s)
      Fujiwara Kazumasa, Vladimir Georgiev
    • Organizer
      名古屋大学多元数理科学研究科談話会
    • Related Report
      2022 Research-status Report
    • Invited
  • [Presentation] 或る初期条件に対する半線型消散型波動方程式の存在時刻の評価,2022

    • Author(s)
      Fujiwara Kazumasa, Vladimir Georgiev
    • Organizer
      第3回大同大学若手セミナー
    • Related Report
      2022 Research-status Report
    • Invited
  • [Presentation] A lifespan estimate for classical damped wave equations with some initial data2022

    • Author(s)
      Fujiwara Kazumasa, Vladimir Georgiev
    • Organizer
      名古屋微分方程式セミナー
    • Related Report
      2022 Research-status Report
    • Invited
  • [Presentation] Necessary and sufficient condition for global existence of $L^2$ solutions for 1D periodic NLS with non-gauge invariant quadratic nonlinearity2022

    • Author(s)
      Fujiwara Kazumasa, Vladimir Georgiev
    • Organizer
      微分方程式の総合的研究
    • Related Report
      2022 Research-status Report
    • Invited
  • [Presentation] On a test function method with fractional derivatives2022

    • Author(s)
      藤原和将
    • Organizer
      第5回 反応拡散方程式と非線形分散型方程式の解の挙動
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] Remark on chain rules in the Sobolev framework2021

    • Author(s)
      藤原和将
    • Organizer
      Nonlinear Wave Equations
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] Necessary and sufficient condition for global existence of L2 solutions for 1D periodic NLS with non-gauge invariant quadratic nonlinearity2021

    • Author(s)
      藤原和将
    • Organizer
      第46回偏微分方程式論札幌シンポジウム
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] 周期境界条件に於ける絶対値冪乗型の非線型項を有するシュレーディンガー方程式に対する 時間大域可解性の為の自乗可積分な初期状態の必要充分条件2021

    • Author(s)
      藤原和将
    • Organizer
      名古屋微分方程式セミナー
    • Related Report
      2021 Research-status Report 2020 Research-status Report
    • Invited
  • [Presentation] Necessary and sufficient condition for global existence of $L^2$ solutions for 1D periodic NLS with non-gauge invariant quadratic nonlinearity2021

    • Author(s)
      藤原和将
    • Organizer
      第10回室蘭非線形解析研究会
    • Related Report
      2020 Research-status Report
    • Invited
  • [Presentation] A sufficient and necessary condition for blow-up of non-gauge invariant nonlinear periodic Schro:dinger equations2020

    • Author(s)
      藤原和将
    • Organizer
      第 721 回 応用解析研究会
    • Related Report
      2020 Research-status Report
    • Invited
  • [Presentation] Necessary and sufficient condition for global existence of $L^2$ solutions for 1D periodic NLS with non-gauge invariant quadratic nonlinearity2020

    • Author(s)
      藤原和将
    • Organizer
      京都大学 NLPDE セミナー
    • Related Report
      2020 Research-status Report
    • Invited
  • [Presentation] Necessary and sufficient condition of L^2 global existence for a periodic nonlinear Schro:dinger equation2020

    • Author(s)
      藤原和将
    • Organizer
      Webinar Critical exponent versus blow-up in evolution models
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research / Invited
  • [Remarks] 藤原和将のホームページ

    • URL

      https://fujiwara-kazumasa.math.ryukoku.ac.jp/home_j.html

    • Related Report
      2023 Annual Research Report 2022 Research-status Report
  • [Funded Workshop] Mathematical Analysis of Nonlinear Dispersive and Wave Equations2022

    • Related Report
      2022 Research-status Report

URL: 

Published: 2020-04-28   Modified: 2025-01-30  

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