• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Energy decay for hyperbolic partial differential equations with variable coefficients and its related topic

Research Project

Project/Area Number 22540193
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Basic analysis
Research InstitutionHiroshima University

Principal Investigator

IKEHATA Ryo  広島大学, 教育学研究科(研究院), 教授 (10249758)

Project Period (FY) 2010-04-01 – 2014-03-31
Project Status Completed (Fiscal Year 2013)
Budget Amount *help
¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Fiscal Year 2013: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2012: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2011: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2010: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Keywords波動方程式 / 摩擦項 / エネルギー減衰 / マルチプライアー法 / フーリエ変換 / 拡散構造 / 発展方程式 / Fourier解析 / エネルギー法 / Haraux-Komornikの不等式 / 低周波数帯 / 国際情報交換 / 分数巾 / エネルギー / 最良減衰率 / 強い摩擦項 / 初期値問題 / 拡散現象 / 漸近形 / Fourier変換 / 減衰評価 / 変数系数 / 臨界減衰 / 減衰率
Research Abstract

We discovered the existence of the double structure in the wave equations with da-mping terms decaying critically near infinity from the viewpoint of the energy decay rates. Secondly we
caught the asymptotic profile of solutions to the strongly damped wave equations in the abstract framework. Thirdly, we derived precise decay estimates of solutions to the wave equations with non-local terms, wh-ich interpolates the weak and strong damping. Finally, we constructed a new modified energy method in the
Fourier space, and the method could be well applied to the several concrete models in order to get the (almost) optimal decay estimates of solutions.

Report

(5 results)
  • 2013 Annual Research Report   Final Research Report ( PDF )
  • 2012 Annual Research Report
  • 2011 Annual Research Report
  • 2010 Annual Research Report
  • Research Products

    (27 results)

All 2014 2013 2012 2011 2010 Other

All Journal Article (11 results) (of which Peer Reviewed: 11 results) Presentation (16 results) (of which Invited: 1 results)

  • [Journal Article] Optimal decay rates for the system of elastic waves in ${\bf R}^{n}$ with structural damping.2014

    • Author(s)
      Ryo Ikehata, R. C. Charao and C. R. da Luz
    • Journal Title

      J. Evol. Equ.

      Volume: 14 Issue: 1 Pages: 197-210

    • DOI

      10.1007/s00028-014-0216-8

    • Related Report
      2013 Annual Research Report 2013 Final Research Report
    • Peer Reviewed
  • [Journal Article] New decay rates for a problem of plate dynamics with fractional damping.2013

    • Author(s)
      R. C. Charao, C. R. da Luz and Ryo Ikehata
    • Journal Title

      J. Hyperbolic Differ. Equ.

      Volume: 10 Issue: 03 Pages: 1-13

    • DOI

      10.1142/s0219891613500203

    • Related Report
      2013 Annual Research Report 2013 Final Research Report
    • Peer Reviewed
  • [Journal Article] Wave equations with strong damping in Hilbert spaces.2013

    • Author(s)
      Ryo Ikehata, G. Todorova, and B. Yordanov,
    • Journal Title

      J. Differential Equations

      Volume: 254 Issue: 8 Pages: 3352-3368

    • DOI

      10.1016/j.jde.2013.01.023

    • Related Report
      2013 Final Research Report 2012 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Optimal decay rate of the energy for wave equations with critical potential2013

    • Author(s)
      R. Ikehata
    • Journal Title

      Journal of the Mathematical Society of Japan

      Volume: 65 Issue: 1 Pages: 183-236

    • DOI

      10.2969/jmsj/06510183

    • NAID

      10031177278

    • ISSN
      0025-5645, 1881-1167, 1881-2333
    • Related Report
      2013 Final Research Report 2012 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Sharp decay rates for wave equations with a fractional damping via new method in the Fourier space.2013

    • Author(s)
      R. C. Charao, C. R. da Luz and Ryo Ikehata
    • Journal Title

      J. Math. Anal. Appl.

      Volume: 408 Issue: 1 Pages: 247-255

    • DOI

      10.1016/j.jmaa.2013.06.016

    • Related Report
      2013 Annual Research Report 2013 Final Research Report
    • Peer Reviewed
  • [Journal Article] Energy decay estimates for wave equations with a fractional damping2012

    • Author(s)
      Ryo Ikehata, Masato Natsume
    • Journal Title

      Differential and Integral Equations

      Volume: 25 Pages: 939-956

    • URL

      http://projecteuclid.org/die

    • Related Report
      2013 Final Research Report
    • Peer Reviewed
  • [Journal Article] Energy decay estimates for wave equations with a fractional damping2012

    • Author(s)
      Ryo IKEHATA
    • Journal Title

      Differential and Integral equations

      Volume: 9-10 Pages: 939-956

    • Related Report
      2012 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Energy decay rates of elastic waves in unbounded domain with potential type of damping2011

    • Author(s)
      Ruy C.Charao
    • Journal Title

      J.Math.Anal.Appl.

      Volume: 380 Issue: 1 Pages: 46-56

    • DOI

      10.1016/j.jmaa.2011.02.075

    • Related Report
      2013 Final Research Report 2011 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Optimal decay rate of the energy for wave equations with critical potential2011

    • Author(s)
      Ryo Ikehata, Grozdena Todorova, Borislav Yordanov
    • Journal Title

      J.Math.Soc.Japan

      Volume: (掲載決定)

    • NAID

      10031177278

    • Related Report
      2011 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Local energy decay for a class of hyperbolic equations with constant coefficient near infinity2010

    • Author(s)
      Shintaro Aikawa, Ryo Ikehata
    • Journal Title

      Mathematische Nachrichten

      Volume: 283 Pages: 636-647

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Semilinear parabolic equation associated with critical Sobolev exponent2010

    • Author(s)
      Ryo Ikehata, Michinori Ishiwata, Takashi Suzuki
    • Journal Title

      Annales de l'Institut Henri Poincare, Analyse non lineaire

      Volume: 27 Pages: 877-900

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Presentation] History and recent trends on damped wave equations2013

    • Author(s)
      Ryo Ikehata
    • Organizer
      Mini-Course at Department of Mathematics, Federal Univ. Santa Catarina
    • Place of Presentation
      Federal Univ. Santa Catarina, Brazil
    • Related Report
      2013 Final Research Report
  • [Presentation] Energy decay estimates for wave equations with a fractional damping2012

    • Author(s)
      Ryo Ikehata
    • Organizer
      9th AIMS International Conference on Dynamical Systems, Differential Equations and Applications
    • Place of Presentation
      Hyatt Regency Grand Cypress, Orlando, Florida, USA
    • Year and Date
      2012-07-04
    • Related Report
      2013 Final Research Report
  • [Presentation] 空間遠方で臨界減衰する摩擦項を持つ波動方程式のエネルギー減衰についての新展開2011

    • Author(s)
      池畠良
    • Organizer
      日本数学会秋季総合分科会函数方程式論分科会特別講演
    • Place of Presentation
      信州大学
    • Year and Date
      2011-09-30
    • Related Report
      2013 Final Research Report
  • [Presentation] 空間遠方で臨界減衰する摩擦項を持つ波動方程式のエネルギー減衰についての新展開2011

    • Author(s)
      池畠良
    • Organizer
      日本数学会秋季総合分科会・函数方程式論分科会
    • Place of Presentation
      信州大学理学部(招待講演)
    • Year and Date
      2011-09-30
    • Related Report
      2011 Annual Research Report
  • [Presentation] Energy decay for wave equations with damping terms decaying critically near infinity2011

    • Author(s)
      Ryo Ikehata
    • Organizer
      The 4^<th> MSJ-SI, Nonlinear Dynamics in Partial Differential Equations
    • Place of Presentation
      Kyushu University
    • Year and Date
      2011-09-18
    • Related Report
      2013 Final Research Report
  • [Presentation] Energy decay for wave equations with damping terms decaying critically near infinity2011

    • Author(s)
      池畠良
    • Organizer
      日本数学会主催国際研究集会:The fourth MSJ-SI "Nonlinear dynamics in partial differential equations"
    • Place of Presentation
      九州大学医学部百年講堂(招待講演)
    • Year and Date
      2011-09-18
    • Related Report
      2011 Annual Research Report
  • [Presentation] ある変数係数波動方程式のエネルギー減衰率2011

    • Author(s)
      池畠良
    • Organizer
      微分方程式セミナー
    • Place of Presentation
      名古屋大学多元数理科学研究科
    • Year and Date
      2011-06-06
    • Related Report
      2013 Final Research Report
  • [Presentation] 変数係数消散型波動方程式のエネルギー減衰2011

    • Author(s)
      池畠良
    • Organizer
      松山解析セミナー2011
    • Place of Presentation
      愛媛大学理学部
    • Year and Date
      2011-02-04
    • Related Report
      2013 Final Research Report
  • [Presentation] 変数係数消散型波動方程式のエネルギー減衰2011

    • Author(s)
      池畠良
    • Organizer
      松山解析セミナー2011
    • Place of Presentation
      愛媛大学理学部(招待講演)
    • Year and Date
      2011-02-04
    • Related Report
      2010 Annual Research Report
  • [Presentation] 変数係数消散型波動方程式のエネルギー減衰評価2011

    • Author(s)
      池畠良
    • Organizer
      九州関数方程式セミナー
    • Place of Presentation
      福岡大学セミナーハウス
    • Year and Date
      2011-01-21
    • Related Report
      2013 Final Research Report
  • [Presentation] 変数係数消散型波動方程式のエネルギー減衰評価2011

    • Author(s)
      池畠良
    • Organizer
      九州関数方程式セミナー
    • Place of Presentation
      福岡大学セミナーハウス(招待講演)
    • Year and Date
      2011-01-21
    • Related Report
      2010 Annual Research Report
  • [Presentation] Optimal decay rate of the energy for linear wave equations with a critical potential2010

    • Author(s)
      Ryo Ikehata
    • Organizer
      8th AIMS International Conference on Dynamical Systems, Differential Equations and Applications
    • Place of Presentation
      Dresden University of Technology, Dresden, Germany
    • Year and Date
      2010-05-27
    • Related Report
      2013 Final Research Report
  • [Presentation] Optimal decay rate of the energy for linear wave equations with a critical potential2010

    • Author(s)
      Ryo Ikehata
    • Organizer
      The 8^<th> AIMS Conference
    • Place of Presentation
      Dresden University of Technology, Germany(招待講演)
    • Year and Date
      2010-05-27
    • Related Report
      2010 Annual Research Report
  • [Presentation] 空間遠方で臨界減衰する摩擦項をもつ線型波動方程式のエネルギーの基礎的減衰評価2010

    • Author(s)
      池畠良
    • Organizer
      第75回応用解析セミナー
    • Place of Presentation
      熊本大学大学院自然科学研究科
    • Year and Date
      2010-05-15
    • Related Report
      2013 Final Research Report
  • [Presentation] 空間遠方で臨界減衰する摩擦項をもつ線型波動方程式のエネルギーの基礎的減衰評価2010

    • Author(s)
      池畠良
    • Organizer
      第75回応用解析セミナー
    • Place of Presentation
      熊本大学大学院(招待講演)
    • Year and Date
      2010-05-15
    • Related Report
      2010 Annual Research Report
  • [Presentation] Energy decay estimates for wave equations with a fractional damping

    • Author(s)
      Ryo IKEHATA
    • Organizer
      9th AIMS International Conference on Dynamical Systems, Differential Equations and Applications
    • Place of Presentation
      Hyatt Regency Grand Cypress, Orlando, Florida, USA
    • Related Report
      2012 Annual Research Report
    • Invited

URL: 

Published: 2010-08-23   Modified: 2019-07-29  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi