Scientific Talks

International Conferences / Workshops

1. Divergence of the time constant for the frog model with Bernoulli initial configurations (invited), Japanese–Netherlands workshop "Random Fields and Random Media", Universiteit Leiden / September, 2024

2. Monotonicity of the time constant for the frog model with Bernoulli initial configurations (invited talk), Random Fields and Processes on Graphs and Fractals, RIMS, Kyoto University / June, 2024

3. Lipschitz-type estimates for the frog model with the Bernoulli initial configuration (invited talk), Workshop on Probabilistic Methods in Statistical Mechanics of Random Media and Random Fields 2023, Kyushu University Nishijin Plaza / January, 2023

4. Strict comparison for the Lyapunov exponents of the simple random walk in random potentials (invited talk), Probability and Analysis on Random Structures and Related Topics, RIMS, Kyoto University / August, 2022

5. Continuity for the asymptotic shape in the frog model with random initial configurations (invited talk), Rigorous Statistical Mechanics and Related Topics, RIMS, Kyoto University / November, 2019

6. Continuity of the rate function for the simple random walk on percolation clusters (invited talk), Japan Netherlands workshop "Probabilistic methods in statistical mechanics of random media", Universiteit Leiden / May, 2019

7. Continuity result for the rate function of the simple random walk on supercritical percolation clusters (invited talk), 17th International symposium "Stochastic Analysis on Large Scale Interacting Systems", RIMS, Kyoto University / November, 2018

8. Tail estimates for the first passage time in the frog model (invited talk), 16th International symposium "Stochastic Analysis on Large Scale Interacting Systems", Graduate School of Mathematical Sciences, the University of Tokyo / November, 2017

9. Upper tail estimates for the first passage time in the frog model (invited talk), Japanese-German Open Conference on Stochastic Analysis 2017, TU Kaiserslautern / September, 2017

10. Continuity results for the frog model in random initial configurations (invited talk), One-day Workshop on Asymptotic and Potential Analysis of Stochastic Processes, Kobe University / August, 2017

11. Concentration inequalities for the simple random walk in unbounded nonnegative potentials (invited talk), Workshop on percolation, spin glasses and random media, Northwestern University / May, 2016

12. Concentrations for the simple random walk in unbounded nonnegative potentials (invited talk), 14th International symposium "Stochastic Analysis on Large Scale Interacting Systems", RIMS, Kyoto University / October, 2015

13. Fluctuations around the asymptotic shape in first-passage percolation under low moments (invited talk), 13th workshop on Stochastic Analysis on Large Scale Interacting Systems, Graduate School of Mathematical Sciences, The University of Tokyo / November, 2014

14. On the speed of convergence in first passage percolation under low moment conditions (invited talk), The 2nd workshop on Universality and Scaling Limits in Probability and Statistical Mechanics, Hokkaido University / August, 2013

15. Quenched invariance principle for simple random walk on discrete point processes (invited talk), RIMS International Project Research 2012: Discrete Geometric Analysis “Markov chains on graphs and related topics”, Research Institute for Mathematical Sciences, Kyoto University / February, 2013

Japan Conferences / Workshops

1. フロッグモデルに関するリプシッツ連続性について, 無限粒子系、確率場の諸問題XVIII, 奈良女子大学 / January, 2024

2. フロッグモデルの時間定数におけるリプシッツ型評価, 日本数学会2023年度年会, 中央大学 / March, 2023

3. Strict comparison for the Lyapunov exponents of the simple random walk in random potentials (invited talk), Workshop on Probabilistic Methods in Statistical Mechanics of Random Media and Random Fields 2022, Zoom / January, 2022

4. Strict comparison for the Lyapunov exponents of the simple random walk in random potentials (invited talk), The 19th Symposium "Stochastic Analysis on Large Scale Interacting Systems", Zoom / December, 2021

5. Strict comparison for the Lyapunov exponents of the simple random walk in random potentials, 無限粒子系、確率場の諸問題XVI, Zoom / October, 2021

6. Continuity for the asymptotic shape in the frog model with random initial configurations, 日本数学会2019年度秋季総合分科会, 金沢大学 / September, 2019

7. Continuity for the rate function of the simple random walk on supercritical percolation clusters, 無限粒子系、確率場の諸問題XIV, 奈良女子大学/ January, 2019

8. Upper tail estimates for the first passage time in the frog model, 無限粒子系、確率場の諸問題XII, 奈良女子大学/ January, 2017

9. フロッグモデルにおける情報伝達速度の末尾評価, 平成28年度（第60回）日本大学理工学部学術講演会, 日本大学理工学部 / December, 2016

10. 不規則媒質中の乱歩に対する大偏差原理とリアプノフ指数 (invited talk), 日本数学会2016年度秋季総合分科会（統計数学分科会特別講演）, 関西大学 / September, 2016

11. Entropy and lattice animals for the simple random walk in random potentials, 無限粒子系、確率場の諸問題XI, 奈良女子大学/ December, 2015

12. On hitting probabilities for a random walk with random killing, 平成27年度（第59回）日本大学理工学部学術講演会, 日本大学理工学部 / December, 2015

13. Lower Gaussian concentration for the crossing random walk in random potentials, 日本数学会2015年度秋季総合分科会, 京都産業大学 / September, 2015

14. 完全グラフ上のイジング模型に対するハミルトニアンの揺らぎ （共同発表: 大輪拓也, 久保田直樹）, イジングモデルに対するSimulated Annealingの解析, 九州大学マス・フォア・インダストリ研究所 / August, 2015

15. Random walks on percolation clusters and related models (invited talk), 第166回ファジィ科学シンポジウム, 東京都市大学 / January, 2015

16. On the upper semi-continuity of the time constant in first-passage percolation with infinite passage times, 新潟確率論ワークショップ, 新潟大学駅南キャンパス「ときめいと」 / January, 2015

17. Gaussian concentration for the lower tail in first-passage percolation under low moments, 確率論シンポジウム, 京都大学数理解析研究所 / December, 2014

18. Shape fluctuations in first passage percolation, 平成26年度（第58回）日本大学理工学部学術講演会, 日本大学理工学部 / December, 2014

19. On the continuity of the time constant of first-passage percolation with infinite passage times, 無限粒子系、確率場の諸問題X, 横浜情報文化センター / November, 2014

20. Non-random fluctuations in first-passage percolation under low moments, 確率論と数理物理学, 東北大学 / November, 2014

21. Rate of convergence in first passage percolation with low moment conditions, 無限粒子系、確率場の諸問題IX, 奈良女子大学 / January, 2014

22. Rate of convergence in first passage percolation with low moment conditions, 確率論シンポジウム, 京都大学数理解析研究所 / December, 2013

23. ファーストパッセージパーコレーションについて, 平成25年度（第57回）日本大学理工学部学術講演会, 日本大学理工学部 / December, 2013

24. Rate of convergence in first passage percolation with low moment conditions, マルコフ過程とその周辺, 東北大学理学部数学科川井ホール / November, 2013

25. Rates of convergence in first passage percolation with a weaker condition than exponential tail assumptions, 日本数学会2013年度秋季総合分科会, 愛媛大学 / September, 2013

26. Quenched large deviations for multidimensional random walk in random environment with holding times, 確率論シンポジウム, 京都大学数理解析研究所 / December, 2012

27. Quenched large deviations for multidimensional random walk in random environment with holding times, 無限粒子系、確率場の諸問題VIII, 奈良女子大学 / October, 2012

28. Large deviations for simple random walk on supercritical percolation clusters, 日本数学会2012年度秋季総合分科会, 九州大学 / September, 2012

29. Large deviations for random walk in random environment with holding times (joint work with R. Fukushima), 新潟確率論ワークショップ, 新潟大学 / January, 2012

30. Quenched invariance principle for simple random walk on discrete point processes, 確率論シンポジウム, 関西大学 / December, 2011

31. Quenched invariance principle for simple random walk on discrete point processes, 平成23年度（第55回）日本大学理工学部学術講演会, 日本大学理工学部 / November, 2011

32. Quenched invariance principle for simple random walk on discrete point processes, 無限粒子系、確率場の諸問題VII, 奈良女子大学 / October, 2011

33. Quenched invariance principle for simple random walk on discrete point processes, 日本数学会2011年度秋季総合分科会, 信州大学 / September, 2011

34. The law of the iterated logarithm for a class of transient random walks in random environment, 平成22年度（第54回）日本大学理工学部学術講演会, 日本大学理工学部 / November, 2010

35. 筒状集合上のランダム環境におけるランダムウォークに対する0-1法則, 平成20年度（第52回）日本大学理工学部学術講演会, 日本大学理工学部 / November, 2008

Seminars

1. ファーストパッセージパーコレーションにおける連続性を巡る種々の話題 (invited talk), 2022年度確率論ヤングサマーセミナー, オンライン / September, 2022

2. ランダムポテンシャル中のシンプルランダムウォークにおけるリアプノフ指数の狭義単調性, 東京確率論セミナー, オンライン / July, 2022

3. フロッグモデルにおける粒子の拡散について (invited talk), 霧島確率論セミナー, 鹿児島工業高等専門学校  / February, 2020

4. フロッグモデルにおける漸近形状の連続性について (invited talk), 大阪大学確率論セミナー, 大阪大学 / December, 2019

5. Continuity result for the rate function of the simple random walk on supercritical percolation clusters (invited talk), 福岡大学確率論セミナー, 福岡大学 / February, 2019

6. Concentrations for the travel cost of the simple random walk in random potentials (invited talk), 東京確率論セミナー, 東京大学数理科学研究科 / November, 2015

7. ファーストパッセージパーコレーションにおける形状の揺らぎについて (invited talk), 今野・竹居研究室セミナー, 横浜国立大学 / October, 2015

8. Large deviations for the travel cost of the simple random walk in random potentials (invited talk), RIMS camp-style seminar: New Trends in Stochastic Analysis, International Institute for Advanced Studies / July, 2015

9. ファーストパッセージパーコレーションとランダムウォークに対するリアプノフ指数 (invited talk), 平成26年度第12回SMARTセミナー, 東北大学 / June, 2014

10. Large deviations for simple random walk on supercritical percolation clusters, 岡山解析・確率論セミナー, 岡山大学 / August, 2012

11. Large deviations for simple random walk on supercritical percolation clusters, 関西確率論セミナー, 京都大学 / July, 2012

12. Quenched large deviations for multidimensional random walk in random environment with holding times, 東京確率論セミナー, 東京工業大学 / June, 2012

13. Quenched invariance principle for simple random walk on discrete point processes, 東京確率論セミナー, 東京工業大学 / October, 2011

Posters

1. Continuity for the asymptotic shape in the frog model with random initial configurations, Bernoulli-IMS One World Symposium 2020, online / August, 2020