SEARCH
検索詳細
佐藤 洋平(サトウ ヨウヘイ)
理工学研究科 数理電子情報部門 | 准教授 |
理学部 数学科 |
研究者情報
■ 研究分野■ 経歴
- 2015年04月 - 現在, 埼玉大学, 大学院理工学研究科, 准教授
- 2013年10月 - 2015年03月, 埼玉大学, 大学院理工学研究科, 講師
- 2012年04月 - 2014年03月, 大阪市立大学, 数学研究所, 研究員
- 2013年04月 - 2013年09月, 東京工業大学, 流動研究員, 日本国
- 2011年04月 - 2012年03月, 大阪市立大学, 数学研究所, 特任准教授
- 2010年04月 - 2011年03月, 大阪市立大学, 数学研究所, 特任助教
- 2007年10月 - 2010年03月, 早稲田大学, 基幹理工学部, 助手
- 2007年04月 - 2007年09月, 早稲田大学, 基幹理工学部, 非常勤講師, 日本国
業績情報
■ 論文- A shooting approach for some semilinear scalar field equation with a Dirac-like potential in one-dimension
Yohei Sato
Nonlinear Analysis: Real World Applications, 巻:84, 開始ページ:104297, 終了ページ:104297, 2025年08月, [査読有り]
Elsevier BV, 英語, 研究論文(学術雑誌)
DOI:https://doi.org/10.1016/j.nonrwa.2024.104297
DOI ID:10.1016/j.nonrwa.2024.104297, ISSN:1468-1218 - A construction of peak solutions by a local mountain pass approach for a nonlinear Schrödinger system with three wave interaction
Yuki Osada; Yohei Sato
Partial Differential Equations and Applications, 巻:6, 号:1, 2025年02月, [査読有り]
Springer Science and Business Media LLC, 英語, 研究論文(学術雑誌)
DOI:https://doi.org/10.1007/s42985-025-00312-7
DOI ID:10.1007/s42985-025-00312-7, ISSN:2662-2963, eISSN:2662-2971 - Symmetric Nonradial Solutions for Nonlinear Schrödinger Systems with Mixed Couplings on \(\mathbb R \)\(^{\boldsymbol n}\)
Yohei Sato; Zhi-Qiang Wang; Jiankang Xia
SIAM Journal on Mathematical Analysis, 巻:57, 号:1, 開始ページ:306, 終了ページ:335, 2025年01月, [査読有り]
Society for Industrial & Applied Mathematics (SIAM), 英語, 研究論文(学術雑誌)
DOI:https://doi.org/10.1137/23m1613785
DOI ID:10.1137/23m1613785, ISSN:0036-1410, eISSN:1095-7154 - Multi-peak Solutions of a Class of Fractional p-Laplacian Equations
Xiaojun Chang; Yohei Sato; Chengxiang Zhang
The Journal of Geometric Analysis, 巻:34, 号:1, 2023年11月, [査読有り]
Springer Science and Business Media LLC, 英語, 研究論文(学術雑誌)
DOI:https://doi.org/10.1007/s12220-023-01475-8
DOI ID:10.1007/s12220-023-01475-8, ISSN:1050-6926, eISSN:1559-002X - Even ground state for nonlinear Schrödinger systems with repulsive interaction
Yohei Sato
Nonlinear Analysis, 巻:234, 開始ページ:113302, 終了ページ:113302, 2023年09月, [査読有り]
Elsevier BV, 英語, 研究論文(学術雑誌)
DOI:https://doi.org/10.1016/j.na.2023.113302
DOI ID:10.1016/j.na.2023.113302, ISSN:0362-546X - Sign-changing solutions for coupled Schrödinger equations with mixed coupling
Yohei Sato; Zhi-Qiang Wang
Topological Methods in Nonlinear Analysis, 開始ページ:1, 終了ページ:1, 2020年12月, [査読有り]
Uniwersytet Mikolaja Kopernika/Nicolaus Copernicus University, 英語, 研究論文(学術雑誌)
DOI:https://doi.org/10.12775/tmna.2020.016
DOI ID:10.12775/tmna.2020.016, ISSN:1230-3429 - Multiplicity of localized solutions of nonlinear Schrödinger systems for infinite attractive case
Xiaojun Chang; Yohei Sato
Journal of Mathematical Analysis and Applications, 巻:491, 号:2, 開始ページ:124358, 終了ページ:124358, 2020年11月, [査読有り]
Elsevier BV, 英語, 研究論文(学術雑誌)
DOI:https://doi.org/10.1016/j.jmaa.2020.124358
DOI ID:10.1016/j.jmaa.2020.124358, ISSN:0022-247X - Nonlinear scalar field equations with Berestycki–Lions’ nonlinearity on large domains
Yohei Sato; Masataka Shibata
Journal of Elliptic and Parabolic Equations, 巻:6, 号:2, 開始ページ:711, 終了ページ:731, 2020年06月, [査読有り]
Springer Science and Business Media LLC, 英語, 研究論文(学術雑誌)
DOI:https://doi.org/10.1007/s41808-020-00079-5
DOI ID:10.1007/s41808-020-00079-5, ISSN:2296-9020, eISSN:2296-9039 - Localized solutions of nonlinear Schrödinger systems with critical frequency for infinite attractive case
Xiaojun Chang; Yohei Sato
Nonlinear Differential Equations and Applications NoDEA, 巻:26, 号:5, 2019年08月, [査読有り]
Springer Science and Business Media LLC, 英語, 研究論文(学術雑誌)
DOI:https://doi.org/10.1007/s00030-019-0578-2
DOI ID:10.1007/s00030-019-0578-2, ISSN:1021-9722, eISSN:1420-9004 - The existence and non-existence of solutions for the nonlinear Schrödinger equation in one dimension
Yohei Sato
Nonlinear Analysis: Real World Applications, 巻:43, 開始ページ:477, 終了ページ:494, 2018年10月, [査読有り]
Elsevier BV, 英語, 研究論文(学術雑誌)
DOI:https://doi.org/10.1016/j.nonrwa.2018.03.013
DOI ID:10.1016/j.nonrwa.2018.03.013, ISSN:1468-1218 - Infinitely many solutions for a nonlinear Schrödinger equation with general nonlinearity
Yohei Sato; Masataka Shibata
Calculus of Variations and Partial Differential Equations, 巻:57, 号:5, 2018年08月, [査読有り]
Springer Science and Business Media LLC, 英語, 研究論文(学術雑誌)
DOI:https://doi.org/10.1007/s00526-018-1413-z
DOI ID:10.1007/s00526-018-1413-z, ISSN:0944-2669, eISSN:1432-0835 - Pattern formation via mixed interactions for coupled Schrödinger equations under Neumann boundary condition
Jaeyoung Byeon; Yohei Sato; Zhi-Qiang Wang
Journal of Fixed Point Theory and Applications, 巻:19, 号:1, 開始ページ:559, 終了ページ:583, 2016年11月, [査読有り]
Springer Science and Business Media LLC, 英語, 研究論文(学術雑誌)
DOI:https://doi.org/10.1007/s11784-016-0365-1
DOI ID:10.1007/s11784-016-0365-1, ISSN:1661-7738, eISSN:1661-7746 - Pattern formation via mixed attractive and repulsive interactions for nonlinear Schrödinger systems
Jaeyoung Byeon; Yohei Sato; Zhi-Qiang Wang
Journal de Mathématiques Pures et Appliquées, 巻:106, 号:3, 開始ページ:477, 終了ページ:511, 2016年09月, [査読有り]
Elsevier BV, 英語, 研究論文(学術雑誌)
DOI:https://doi.org/10.1016/j.matpur.2016.03.001
DOI ID:10.1016/j.matpur.2016.03.001, ISSN:0021-7824 - Multiple positive solutions for Schrödinger systems with mixed couplings
Yohei Sato; Zhi-Qiang Wang
Calculus of Variations and Partial Differential Equations, 巻:54, 号:2, 開始ページ:1373, 終了ページ:1392, 2015年10月, [査読有り]
We study the effects of mixed couplings for nonlinear Schrödinger systems. We show due to the mixed couplings there exist multiple vector positive solutions which exhibit interesting new patterns of co-existence of synchronization and segregation. For a 3-system we show the existence of multiple positive vector solutions with the first two components being synchronized and segregated from the third component. We investigate the asymptotic of these solutions with a large attractive coupling constant.
Springer New York LLC, 英語, 研究論文(学術雑誌)
DOI:https://doi.org/10.1007/s00526-015-0828-z
DOI ID:10.1007/s00526-015-0828-z, ISSN:0944-2669, SCOPUS ID:84941944267 - Least Energy Solutions for Nonlinear Schrödinger Systems with Mixed Attractive and Repulsive Couplings
Yohei Sato; Zhi-Qiang Wang
Advanced Nonlinear Studies, 巻:15, 号:1, 開始ページ:1, 終了ページ:22, 2015年02月, [査読有り]
Abstract
In this paper we study the ground state solutions for a nonlinear elliptic system of three equations which comes from models in Bose-Einstein condensates. Comparing with existing works in the literature which have been on purely attractive or purely repulsive cases, our investigation focuses on the effect of mixed interaction of attractive and repulsive couplings. We establish the existence of least energy positive solutions and study asymptotic profile of the ground state solutions, giving indication of co-existence of synchronization and segregation. In particular we show symmetry breaking for the ground state solutions.
Walter de Gruyter GmbH, 英語, 研究論文(学術雑誌)
DOI:https://doi.org/10.1515/ans-2015-0101
DOI ID:10.1515/ans-2015-0101, ISSN:1536-1365, eISSN:2169-0375 - On the least energy sign-changing solutions for a nonlinear elliptic system
Yohei Sato; Zhi-Qiang Wang
Discrete & Continuous Dynamical Systems - A, 巻:35, 号:5, 開始ページ:2151, 終了ページ:2164, 2015年, [査読有り]
American Institute of Mathematical Sciences (AIMS), 英語, 研究論文(学術雑誌)
DOI:https://doi.org/10.3934/dcds.2015.35.2151
DOI ID:10.3934/dcds.2015.35.2151, ISSN:1553-5231 - Existence of a positive solution for nonlinear Schrödinger equations with general nonlinearity
Yohei Sato; Masataka Shibata
Advances in Nonlinear Analysis, 巻:3, 号:S1, 開始ページ:s55, 終了ページ:s67, 2014年05月, [査読有り]
Abstract
We study the following nonlinear Schrödinger equations: - Δ u + V ( x ) u = f ( u ) in ℝ N . $- \Delta u + V(x) u = f(u) \quad \text{in } {\mathbb {R}^N}.$ The purpose of this paper is to establish the existence of a positive solutionunder general conditions which are weaker than the Ambrosetti–Rabinowitz condition.
Walter de Gruyter GmbH, 英語, 研究論文(学術雑誌)
DOI:https://doi.org/10.1515/anona-2014-0003
DOI ID:10.1515/anona-2014-0003, ISSN:2191-9496, eISSN:2191-950X - On the multiple existence of semi-positive solutions for a nonlinear Schrödinger system
Yohei Sato; Zhi-Qiang Wang
Annales de l'Institut Henri Poincaré C, Analyse non linéaire, 巻:30, 号:1, 開始ページ:1, 終了ページ:22, 2013年02月, [査読有り]
The paper concerns multiplicity of vector solutions for nonlinear Schrödinger systems, in particular of semi-positive solutions. New variational techniques are developed to study the existence of this type of solutions. Asymptotic behaviors are examined in various parameter regimes including both attractive and repulsive cases.
European Mathematical Society - EMS - Publishing House GmbH, 研究論文(学術雑誌)
DOI:https://doi.org/10.1016/j.anihpc.2012.05.002
DOI ID:10.1016/j.anihpc.2012.05.002, ISSN:0294-1449, eISSN:1873-1430 - Sign-changing multi-bump solutions for nonlinear Schrödinger equations with steep potential wells
Yohei Sato; Kazunaga Tanaka
Transactions of the American Mathematical Society, 巻:361, 号:12, 開始ページ:6205, 終了ページ:6253, 2009年07月, [査読有り]
American Mathematical Society (AMS), 英語, 研究論文(学術雑誌)
DOI:https://doi.org/10.1090/s0002-9947-09-04565-6
DOI ID:10.1090/s0002-9947-09-04565-6, ISSN:0002-9947 - Sign-changing multi-peak solutions for nonlinear Schrödinger equations with critical frequency
Yohei Sato
Communications on Pure & Applied Analysis, 巻:7, 号:4, 開始ページ:883, 終了ページ:903, 2008年, [査読有り]
American Institute of Mathematical Sciences (AIMS), 研究論文(学術雑誌)
DOI:https://doi.org/10.3934/cpaa.2008.7.883
DOI ID:10.3934/cpaa.2008.7.883, ISSN:1553-5258 - Multi-peak positive solutions for nonlinear Schrödinger equations with critical frequency
Yohei Sato
Calculus of Variations and Partial Differential Equations, 巻:29, 号:3, 開始ページ:365, 終了ページ:395, 2007年01月, [査読有り]
Springer Science and Business Media LLC, 研究論文(学術雑誌)
DOI:https://doi.org/10.1007/s00526-006-0070-9
DOI ID:10.1007/s00526-006-0070-9, ISSN:0944-2669, eISSN:1432-0835