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Fluctuation theory for random walks and its application to the diffusion limited aggregation model

Research Project

Project/Area Number 18740053
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeSingle-year Grants
Research Field General mathematics (including Probability theory/Statistical mathematics)
Research InstitutionOsaka University

Principal Investigator

ISOZAKI Yasuki  Osaka University, 大学院理学研究科, 講師 (90273573)

Project Period (FY) 2006 – 2008
Project Status Completed (Fiscal Year 2008)
Budget Amount *help
¥2,810,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥210,000)
Fiscal Year 2008: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2007: ¥800,000 (Direct Cost: ¥800,000)
Fiscal Year 2006: ¥1,100,000 (Direct Cost: ¥1,100,000)
Keywords揺動理論 / ランダムウォーク / DLAモデル / 初到達時刻 / 二次元揺動理論 / 漸近評価 / 二次元遥動理論
Research Abstract

一次元非粘性バーガース方程式に、ホワイトノイズの初期条件を正の半直線上で与え、負の半直線上にはマイナス無限大を与えた系を研究し、質量流の性質を統計的に記述した。
遥動理論の二次元ランダムウォークへの種々の拡張を行った。二次元ランダムウォークが半無限直線へ初めて到達する時刻・場所をふくむ詳細情報に関する確率分布の裾野の漸近評価を得た。
二次元ブラウン運動でも半直線への初到達時刻の詳細情報に関する漸近評価を得た。二次元ランダムウォークの場合と同じ特徴的な定積分を導出したが、その出現に到る過程はまったく異なっていた。
片側の跳躍のみを持つレヴィ過程が初めて出発点を下回るときの値の確率分布を研究した。

Report

(4 results)
  • 2008 Annual Research Report   Final Research Report ( PDF )
  • 2007 Annual Research Report
  • 2006 Annual Research Report
  • Research Products

    (9 results)

All 2009 2006

All Journal Article (5 results) (of which Peer Reviewed: 4 results) Presentation (4 results)

  • [Journal Article] An asymptotic estimate for the hitting time of a half-line by two-dimensional Brownian motion2009

    • Author(s)
      磯崎泰樹
    • Journal Title

      To appear in Journal of Mathematics of Kyoto University

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] Fluctuation identities applied to the hitting time of a half-line in the plane2009

    • Author(s)
      磯崎泰樹
    • Journal Title

      J. Theoretical Probability 22

      Pages: 57-81

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] Fluctuation identities applied to the hitting time of a half-line in the plane2009

    • Author(s)
      Y. Isozaki
    • Journal Title

      J. Theoretical Probabability 22

      Pages: 57-81

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] On some laws of iterated logarithm for Burgers turbulence with Brownian initial data based on the concave majorant2006

    • Author(s)
      磯崎泰樹
    • Journal Title

      Osaka Journal of Mathematics 43

      Pages: 239-261

    • NAID

      120004845906

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] On some laws of iterated logarithm for Burgers turbulence with Brownian initial data based on the concave majorant2006

    • Author(s)
      Y.Isozaki
    • Journal Title

      Osaka Journal of Mathamematics 43

      Pages: 239-261

    • NAID

      120004845906

    • Related Report
      2006 Annual Research Report
  • [Presentation] Fluctuation identities applied to the hitting time of a half line in the plane2006

    • Organizer
      'Probability Theory and Related Topics' Oidemase-Yamaguchi Symposium
    • Place of Presentation
      セントコア山口(山口県山口市)
    • Year and Date
      2006-11-14
    • Related Report
      2008 Final Research Report
  • [Presentation] A review on ERRW with emphasis on the Diaconis walk on the half line2006

    • Organizer
      広島大学確率論セミナー
    • Place of Presentation
      広島大学
    • Year and Date
      2006-10-17
    • Related Report
      2008 Final Research Report
  • [Presentation] 二次元ランダムウォークの揺動理論の応用2006

    • Organizer
      九州確率論セミナー
    • Place of Presentation
      九州大学
    • Year and Date
      2006-06-30
    • Related Report
      2008 Final Research Report
  • [Presentation] 二次元ランダムウォークの揺動理論の応用2006

    • Organizer
      大阪大学確率論火曜セミナー
    • Place of Presentation
      大阪大学
    • Year and Date
      2006-05-16
    • Related Report
      2008 Final Research Report

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Published: 2006-04-01   Modified: 2016-04-21  

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