Niikuni Hiroaki 新國裕昭

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NIIKUNI Hiroaki 新國裕昭

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Researcher Number	90609562
Other IDs
Affiliation (Current)	2026: 前橋工科大学, 工学部, 准教授
Affiliation (based on the past Project Information) *help	2018 – 2024: 前橋工科大学, 工学部, 准教授 2013 – 2017: 前橋工科大学, 工学部, 講師 2011 – 2012: 同志社大学, 理工学部, 助教
Review Section/Research Field	Principal Investigator Mathematical analysis / Basic Section 12010:Basic analysis-related / Basic analysis
Keywords	Principal Investigator 量子グラフ / カーボンナノチューブ / バンド構造 / スペクトラルギャップ / スペクトル理論 / 周期ポテンシャル / シュレディンガー作用素 / スペクトル / 移動行列 / Floquet-Bloch理論 … More / トポロジカル絶縁体 / 分散関係 / Shnol 型定理 / 埋蔵固有値 / グラフェン / シュレディンガー方程式 / 関数解析学 / 解析学 / 負の固有値の個数 / Shortley-Welley 近似 / Zolotalev function / δ型点相互作用 / von Neumann の自己共役拡張 / 一般点相互作用 / ３階微分作用素 / 数学 / 不純物 / 微分方程式 / エッジハミルトニアン / バルクハミルトニアン / エッジ状態 / シュレディンガー方程式・作用素 / ヒル作用素 / 微分方程式論 / クローニッヒ・ペニーハミルトニアン / 函数解析学 / ジグザグナノチューブ / 回転数 / モノドロミー行列 / 点相互作用 Less

Research Projects
(4 results)
Research Products
(75 results)

Quantum graph aspects for graphene and carbon nanotube in non-uniform fieldsPrincipal Investigator
- Principal Investigator
  
  新國裕昭
- Project Period (FY)
  2021 – 2025
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Review Section
  
  Basic Section 12010:Basic analysis-related
- Research Institution
  Maebashi Institute of Technology
Studies on spectral band structures on carbon nanotubes and their related topicsPrincipal Investigator
- Principal Investigator
  
  Niikuni Hiroaki
- Project Period (FY)
  2017 – 2021
- Research Category
  
  Grant-in-Aid for Young Scientists (B)
- Research Field
  
  Mathematical analysis
- Research Institution
  Maebashi Institute of Technology
Analysis of Spectral Gaps of Periodic Schroedinger OperatorsPrincipal Investigator
- Principal Investigator
  
  Hiroaki Niikuni
- Project Period (FY)
  2013 – 2017
- Research Category
  
  Grant-in-Aid for Young Scientists (B)
- Research Field
  
  Mathematical analysis
- Research Institution
  Maebashi Institute of Technology
A Study in the spectral theory of the periodic Schr?dinger operatorsPrincipal Investigator
- Principal Investigator
  
  NIIKUNI Hiroaki
- Project Period (FY)
  2011 – 2012
- Research Category
  
  Grant-in-Aid for Research Activity Start-up
- Research Field
  
  Basic analysis
- Research Institution
  Doshisha University

All 2023 2022 2021 2020 2019 2018 2017 2016 2015 2014 2012 2011 Other

All Journal Article Presentation

[Journal Article] Schroedinger operators on ice-nanotubes with the delta vertex conditions2023
- Author(s)
  Hiroaki Niikuni
- Journal Title
  
  Quantum Studies; Mathematics and Foundations
  
  Volume: 10 Issue: 1 Pages: 1-26
- DOI
  10.1007/s40509-022-00278-w
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-21K03273
[Journal Article] An exact formula for the number of negative eigenvalues for zigzag carbon nanotubes with δ impurities2023
- Author(s)
  Hiroaki Niikuni
- Journal Title
  
  Integral Equations and Operator Theory
  
  Volume: 95 Issue: 2
- DOI
  10.1007/s00020-023-02731-w
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-21K03273
[Journal Article] Spectra of Graphenes with variant edges2022
- Author(s)
  Hiroaki Niikuni
- Journal Title
  
  Operators and Matrices
  
  Volume: 16 (4) Issue: 4 Pages: 1063-1095
- DOI
  10.7153/oam-2022-16-71
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-21K03273
[Journal Article] Edge States of Schroedinger Equations on Graphene with Zigzag Boundaries2021
- Author(s)
  Hiroaki Niikuni
- Journal Title
  
  Results in Mathematics
  
  Volume: 76 Issue: 2 Pages: 55-81
- DOI
  10.1007/s00025-021-01361-1
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-17K14221
[Journal Article] Existence of eigenvalues embedded in the spectral bands of Schrödinger operators on carbon nanotubes with impurities2020
- Author(s)
  Hiroaki Niikuni
- Journal Title
  
  Letters in Mathematical Physics
  
  Volume: 110 Issue: 2 Pages: 387-420
- DOI
  10.1007/s11005-019-01220-9
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-17K14221
[Journal Article] Schroedinger operators on a Zigzag Supergraphene-Based Carbon Nanotube2018
- Author(s)
  Hiroaki Niikuni
- Journal Title
  
  Communications in Computational Physics
  
  Volume: 23, 5 Issue: 5 Pages: 1434-1475
- DOI
  10.4208/cicp.120715.080517a
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-17K14221
[Journal Article] Schrödinger operators on a periodically broken zigzag carbon nanotube2017
- Author(s)
  Hiroaki Niikuni
- Journal Title
  
  Proceedings of the Indian Academy of Sciences-Mathematical Science
  
  Volume: 127, No.3
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-25800085
[Journal Article] Schroedinger operators on a periodically broken zigzag carbon nanotube2017
- Author(s)
  Hiroaki Niikuni
- Journal Title
  
  Proceedings of the Indian Academy of Sciences-Mathematical Science
  
  Volume: 127, No.3 Issue: 3 Pages: 471-516
- DOI
  10.1007/s12044-017-0342-7
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-17K14221
[Journal Article] Spectral band structure of periodic Schrödinger operators with two potentials on the degenerate zigzag nanotube2016
- Author(s)
  Hiroaki Niikuni
- Journal Title
  
  Journal of Applied Mathematics and Computing
  
  Volume: 50-1
- Peer Reviewed / Acknowledgement Compliant
- Data Source
  KAKENHI-PROJECT-25800085
[Journal Article] Decisiveness of the spectral gaps of periodic Schroedinger operators on the dumbbell-like metric graph2015
- Author(s)
  Hiroaki Niikuni
- Journal Title
  
  Opuscula Mathematica
  
  Volume: 35-2 Pages: 199-234
- Peer Reviewed / Acknowledgement Compliant
- Data Source
  KAKENHI-PROJECT-25800085
[Journal Article] Spectral band structure of periodic Schrödinger operators on a generalized degenerate zigzag nanotube2015
- Author(s)
  Hiroaki Niikuni
- Journal Title
  
  Tokyo Journal of Mathematics
  
  Volume: 38-2
- Peer Reviewed / Acknowledgement Compliant
- Data Source
  KAKENHI-PROJECT-25800085
[Journal Article] Spectra of periodic Schrｏｅdinger operators on the degenerate zigzag nanotube with δ type vertex conditions2014
- Author(s)
  Hiroaki Niikuni
- Journal Title
  
  Integral Equations and Operator Theory
  
  Volume: 79-4 Pages: 477-505
- Peer Reviewed / Acknowledgement Compliant
- Data Source
  KAKENHI-PROJECT-25800085
[Journal Article] A periodic Schrödinger operator with two degenerate spectral gaps2012
- Author(s)
  Hiroaki Niikuni
- Journal Title
  
  Far East Journal of Mathematical Science
  
  Volume: 71-2 Pages: 205-246
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-23840042
[Journal Article] On the degenerate spectral gaps of the one-dimensional Schrödinger operator with periodic point interactions2012
- Author(s)
  Hiroaki Niikuni
- Journal Title
  
  SIAM Journal on Mathematical Analysis
  
  Volume: 44-4 Issue: 4 Pages: 2847-2870
- DOI
  10.1137/100792184
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-23840042
[Journal Article] On the degenerate spectral gaps of the one-dimensional Schrodinger operator with periodic point interactions2012
- Author(s)
  H. Niikuni
- Journal Title
  
  SIAM Journal on Mathematical Analysis
  
  Volume: 44-4 Pages: 2847-2870
- Data Source
  KAKENHI-PROJECT-23840042
[Journal Article] A periodic Schrodinger operator with two degenerate spectral gaps2012
- Author(s)
  H. Niikuni
- Journal Title
  
  Far East Journal of Mathematical Science
  
  Volume: 71-2 Pages: 205-246
- Data Source
  KAKENHI-PROJECT-23840042
[Presentation] 環上にδ型不純物を含むカーボンナノチューブの負の固有値の個数について2023
- Author(s)
  Hiroaki Niikuni
- Organizer
  夏の作用素論シンポジウム
- Data Source
  KAKENHI-PROJECT-21K03273
[Presentation] An explicit formulae for the number of the negative eigenvalues for carbon nanotubes with a ring of δ-impurities2023
- Author(s)
  新國裕昭
- Organizer
  RIMS共同研究「様々なポテンシャルを持つシュレディンガー作用素のスペクトル理論」
- Invited
- Data Source
  KAKENHI-PROJECT-21K03273
[Presentation] An estimate of the resolvent difference between 1D Schroedinger operators with δ-interactions and their Shortley-Weller approximations2023
- Author(s)
  新國裕昭
- Organizer
  RIMS共同研究「様々なポテンシャルを持つシュレディンガー作用素のスペクトル理論」
- Invited
- Data Source
  KAKENHI-PROJECT-21K03273
[Presentation] Spectral discriminants for a variant graphene with bumpy boundaries2021
- Author(s)
  Hiroaki Niikuni
- Organizer
  スペクトル・散乱理論とその周辺
- Invited
- Data Source
  KAKENHI-PROJECT-21K03273
[Presentation] Spectral discriminants for a variant graphene with bumpy boundaries2021
- Author(s)
  Hiroaki Niikuni
- Organizer
  スペクトル・散乱理論とその周辺（RIMS共同研究）
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-17K14221
[Presentation] Edge states of Schroedinger equations on graphene with zigzag boundaries2021
- Author(s)
  Hiroaki Niikuni
- Organizer
  Himeji Conference on Partial Differential Equations
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-17K14221
[Presentation] Edge states of Schroedinger equations on graphene with zigzag boundaries2021
- Author(s)
  Hiroaki Niikuni
- Organizer
  確率論セミナー（東北大学）
- Invited
- Data Source
  KAKENHI-PROJECT-17K14221
[Presentation] Edge states of Schroedinger equations on graphene with zigzag boundaries2021
- Author(s)
  Hiroaki Niikuni
- Organizer
  確率論セミナー
- Invited
- Data Source
  KAKENHI-PROJECT-21K03273
[Presentation] Edge states of Schroedinger equations on graphene with zigzag boundaries2021
- Author(s)
  Hiroaki Niikuni
- Organizer
  作用素論セミナー（京都大学）
- Invited
- Data Source
  KAKENHI-PROJECT-17K14221
[Presentation] Edge states of Schroedinger equations on graphene with zigzag boundaries2021
- Author(s)
  Hiroaki Niikuni
- Organizer
  作用素論セミナー」
- Invited
- Data Source
  KAKENHI-PROJECT-21K03273
[Presentation] Embedded eigenvalues in the spectral bands for carbon nanotubes with impurities2019
- Author(s)
  Hiroaki Niikuni
- Organizer
  Iwota2019
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-17K14221
[Presentation] On the eigenvalues embedded in the spectral bands for carbon nanotubes with impurities2019
- Author(s)
  Hiroaki Niikuni
- Organizer
  Qmath14
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-17K14221
[Presentation] On the eigenvalues in the spectral bands for carbon nanotubes with impurities2019
- Author(s)
  Hiroaki Niikuni
- Organizer
  Equadiff2019
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-17K14221
[Presentation] Spectral analysis for quantum graphs with periodicity and symmetric impulities -Overview and New results- I2019
- Author(s)
  Hiroaki Niikuni
- Organizer
  幾何構造がもたらすスペクトル解析における新展開
- Invited
- Data Source
  KAKENHI-PROJECT-17K14221
[Presentation] δ型不純物を含有するカーボンナノチューブの埋蔵固有値の個数評価2019
- Author(s)
  Hiroaki Niikuni
- Organizer
  The 17th Linear and Nonlinear Waves
- Invited
- Data Source
  KAKENHI-PROJECT-17K14221
[Presentation] Spectral analysis for quantum graphs with periodicity and symmetric impulities -Overview and New results- II2019
- Author(s)
  Hiroaki Niikuni
- Organizer
  幾何構造がもたらすスペクトル解析における新展開）
- Invited
- Data Source
  KAKENHI-PROJECT-17K14221
[Presentation] On the spectra of periodic Schroedinger operators on a super carbon nanotube2018
- Author(s)
  Hiroaki Niikuni
- Organizer
  Differential Equations and Networks
- Invited
- Data Source
  KAKENHI-PROJECT-17K14221
[Presentation] On the spectra of periodic Schrödinger operators on a super carbon nanotube2018
- Author(s)
  Hiroaki Niikuni
- Organizer
  Differential Equations and Networks
- Invited
- Data Source
  KAKENHI-PROJECT-25800085
[Presentation] Estimates of the number of the eigenvalues embedded inside the spectral bands of Schroedinger operators on carbon nanotubes with impurities2018
- Author(s)
  Hiroaki Niikuni
- Organizer
  グラフ上の逆問題、スペクトル解析と関連課題研究ワークショップ
- Invited
- Data Source
  KAKENHI-PROJECT-17K14221
[Presentation] δ型不純物を含有するカーボンナノチューブのスペクトルについて2018
- Author(s)
  Hiroaki Niikuni
- Organizer
  2018夏の作用素論シンポジウ
- Data Source
  KAKENHI-PROJECT-17K14221
[Presentation] シュレディンガー方程式を解いて，カーボンナノチューブ内の電子を探る2018
- Author(s)
  Hiroaki Niikuni
- Organizer
  筑波大学付属駒場中高等学校数学特別講座
- Data Source
  KAKENHI-PROJECT-17K14221
[Presentation] On the eigenvalue embedded in the spectral bands of Schroedinger operators on carbon nanotubes with impurities2018
- Author(s)
  Hiroaki Niikuni
- Organizer
  XIX International Congress on Mathematical Physics (ICMP)- Young Researchers Symposium
- Data Source
  KAKENHI-PROJECT-17K14221
[Presentation] Spectral analysis of periodic Schroedinger operators on a broken carbon nanotube2017
- Author(s)
  Hiroaki Niikuni
- Organizer
  Nonlinear Partial Differential Equations on Graphs
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-17K14221
[Presentation] On the spectra of periodic Schroedinger operators on a super carbon nanotube2017
- Author(s)
  新國裕昭
- Organizer
  日本数学会春期総合分科会（函数解析学分科会）
- Place of Presentation
  首都大学東京
- Year and Date
  2017-03-24
- Data Source
  KAKENHI-PROJECT-25800085
[Presentation] Spectral problem for periodic Schroedinger operators with two distinct potentials on the degenerate zigzag carbon nanotube2017
- Author(s)
  Hiroaki Niikuni
- Organizer
  Equadiff 2017
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-17K14221
[Presentation] 多重結合からなるジグザグナノチューブ上の周期的シュレディンガー作用素のスペクトルについて2017
- Author(s)
  Hiroaki Niikuni
- Organizer
  日本数学会函数解析学分科会
- Data Source
  KAKENHI-PROJECT-17K14221
[Presentation] Spectral problem for periodic Schrödinger operators with two distinct potentials on the degenerate zigzag carbon nanotube2017
- Author(s)
  Hiroaki Niikuni
- Organizer
  Equadiff 2017
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-25800085
[Presentation] Spectral analysis of periodic Schrödinger operators on a broken carbon nanotube2017
- Author(s)
  Hiroaki Niikuni
- Organizer
  Nonlinear Partial Differential Equations on Graphs
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-25800085
[Presentation] 多重結合からなるジグザグナノチューブ上の周期的シュレディンガー作用素のスペクトルについて2017
- Author(s)
  Hiroaki Niikuni
- Organizer
  日本数学会函数解析学分科会
- Data Source
  KAKENHI-PROJECT-25800085
[Presentation] 特別講演「カーボンナノチューブのバンドギャップスペクトル構造」2016
- Author(s)
  Hiroaki Niikuni
- Organizer
  日本数学会春期総合分科会（函数解析学分科会）
- Place of Presentation
  筑波大学
- Year and Date
  2016-03-16
- Invited
- Data Source
  KAKENHI-PROJECT-25800085
[Presentation] Schroedinger operators on a periodically broken zigzag carbon nanotube2016
- Author(s)
  新國裕昭
- Organizer
  東京大学解析学火曜セミナー
- Place of Presentation
  東京大学
- Year and Date
  2016-06-14
- Invited
- Data Source
  KAKENHI-PROJECT-25800085
[Presentation] Schroedinger operators on a zigzag supergraphene-based carbon nanotube2016
- Author(s)
  新國裕昭
- Organizer
  QMath13: Mathematical Results in Quantum Mechanics
- Place of Presentation
  Georgia Institute of Technology (アメリカ合衆国・アトランタ)
- Year and Date
  2016-10-08
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-25800085
[Presentation] スーパーカーボンナノチューブのスペクトルについて2016
- Author(s)
  新國裕昭
- Organizer
  愛媛大学スペクトル・散乱セミナー
- Place of Presentation
  愛媛大学
- Year and Date
  2016-12-22
- Invited
- Data Source
  KAKENHI-PROJECT-25800085
[Presentation] Schroedinger operators on a periodically broken zigzag carbon nanotube2016
- Author(s)
  新國裕昭
- Organizer
  偏微分方程式セミナー
- Place of Presentation
  北海道大学
- Year and Date
  2016-07-01
- Invited
- Data Source
  KAKENHI-PROJECT-25800085
[Presentation] chrödinger operators on a periodically broken zigzag carbon nanotube2016
- Author(s)
  Hiroaki Niikuni
- Organizer
  WCSM-2016(BIT’s 2nd Annual World Congress of Smart Materials-2016)
- Place of Presentation
  Grand Copthorne Waterfron Hotel (シンガポール)
- Year and Date
  2016-03-05
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-25800085
[Presentation] Schrödinger operators on a periodically broken zigzag carbon nanotube2015
- Author(s)
  Hiroaki Niikuni
- Organizer
  XVIII International Congress on Mathematical Physics, Young Researchers Symposium
- Place of Presentation
  Pontificia Universidad Catolica de Chile (チリ)
- Year and Date
  2015-07-25
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-25800085
[Presentation] Spectral structure of periodic Schrödinger operators with two potentials on the degenerate zigzag nanotubes2015
- Author(s)
  Hiroaki Niikuni
- Organizer
  日本数学会秋季総合分科会（函数解析学分科会）
- Place of Presentation
  京都産業大学
- Year and Date
  2015-09-13
- Data Source
  KAKENHI-PROJECT-25800085
[Presentation] 周期的に破損したカーボンナノチューブのスペクトルについて2015
- Author(s)
  Hiroaki Niikuni
- Organizer
  2015年夏の作用素論シンポジウム
- Place of Presentation
  フェニックス・プラザ（福井市田原）
- Year and Date
  2015-09-06
- Data Source
  KAKENHI-PROJECT-25800085
[Presentation] Schrödinger operators on a periodically broken zigzag carbon nanotube2015
- Author(s)
  Hiroaki Niikuni
- Organizer
  Kochi Quantum Week, Autumn 2015
- Place of Presentation
  高知工科大学
- Year and Date
  2015-10-12
- Invited
- Data Source
  KAKENHI-PROJECT-25800085
[Presentation] 一般退化ジグザグナノチューブ上の周期的シュレディンガー作用素のスペクトルについて2014
- Author(s)
  Hiroaki Niikuni
- Organizer
  愛媛大学解析セミナー
- Place of Presentation
  愛媛大学
- Year and Date
  2014-06-21
- Invited
- Data Source
  KAKENHI-PROJECT-25800085
[Presentation] 一般退化ジグザグナノチューブ上の周期的シュレディンガー作用素のスペクトルについて2014
- Author(s)
  Hiroaki Niikuni
- Organizer
  信州関数解析シンポジウム
- Place of Presentation
  信州大学
- Year and Date
  2014-12-01
- Invited
- Data Source
  KAKENHI-PROJECT-25800085
[Presentation] Spectral band structure of periodic Schrödinger operators on generalized degenerate zigzag nanotubes2014
- Author(s)
  Hiroaki Niikuni
- Organizer
  日本数学会秋季総合文化会（函数方程式論文化会）
- Place of Presentation
  広島大学
- Year and Date
  2014-09-05
- Data Source
  KAKENHI-PROJECT-25800085
[Presentation] Spectral band structure of periodic Schrödinger operators on generalized degenerate zigzag nanotubes2014
- Author(s)
  Hiroaki Niikuni
- Organizer
  Operator Theory Analysis and Mathematical Physics (OTAMP 2014)
- Place of Presentation
  Department of Mathematics Stockholm University (Sweden)
- Year and Date
  2014-07-08
- Data Source
  KAKENHI-PROJECT-25800085
[Presentation] 一般退化ジグザグナノチューブ上の周期的シュレディンガー作用素のスペクトルについて2014
- Author(s)
  Hiroaki Niikuni
- Organizer
  2014年夏の作用素論シンポジウム
- Place of Presentation
  セミナー・カルチャーセンター臨湖（勤労者福祉会館）
- Year and Date
  2014-09-08
- Data Source
  KAKENHI-PROJECT-25800085
[Presentation] An example of the periodic Schrödinger operators with two degenerate spectral gaps2012
- Author(s)
  新國裕昭
- Organizer
  阪大微分方程式セミナー
- Place of Presentation
  大阪大学
- Invited
- Data Source
  KAKENHI-PROJECT-23840042
[Presentation] An example of the periodic Schrodinger operators with two degenerate spectral gaps2012
- Author(s)
  新國裕昭
- Organizer
  日本数学会春季総合分科会(函数方程式論分科会)
- Place of Presentation
  東京理科大学(東京)
- Year and Date
  2012-03-26
- Data Source
  KAKENHI-PROJECT-23840042
[Presentation] An example of the periodic Schrodinger operators with two degenerate spectral gaps2012
- Author(s)
  新國裕昭
- Organizer
  スペクトル・散乱あきう(秋保)シンポジウム
- Place of Presentation
  仙台秋保温泉ばんじ家(宮城)
- Year and Date
  2012-01-09
- Data Source
  KAKENHI-PROJECT-23840042
[Presentation] A periodic Schrodinger operator with two degenerate spectral gaps2011
- Author(s)
  新國裕昭
- Organizer
  スペクトル・散乱理論とその周辺
- Place of Presentation
  京都大学数理解析研究所(京都)
- Year and Date
  2011-12-16
- Data Source
  KAKENHI-PROJECT-23840042
[Presentation] A periodic Schrodinger operator with exactly two degenerate spectral gaps2011
- Author(s)
  新國裕昭
- Organizer
  2011夏の作用素論シンポジウム
- Place of Presentation
  熊本市国際交流会館(熊本)
- Year and Date
  2011-09-03
- Data Source
  KAKENHI-PROJECT-23840042
[Presentation] A periodic Schrodinger operator with exactly two degenerate spectral gaps2011
- Author(s)
  新國裕昭
- Organizer
  作用素論セミナー
- Place of Presentation
  京都大学数理解析研究所(京都)
- Year and Date
  2011-06-24
- Data Source
  KAKENHI-PROJECT-23840042
[Presentation] A periodic Schrodinger operator with two degenerate spectral gaps2011
- Author(s)
  新國裕昭
- Organizer
  ランダム作用素のスペクトルと関連する話題
- Place of Presentation
  京都大学人間・環境研究科棟(京都)
- Year and Date
  2011-12-01
- Data Source
  KAKENHI-PROJECT-23840042
[Presentation] ジグザグナノチューブに付随する量子グラフ上の周期的シュレディンガー作用素のスペクトルについて
- Author(s)
  Hiroaki Niikuni
- Organizer
  微分方程式の総合的研究
- Place of Presentation
  東京大学数理解析研究所
- Invited
- Data Source
  KAKENHI-PROJECT-25800085
[Presentation] ジグザグナノチューブに付随する量子グラフ上の周期的シュレディンガー作用素のスペクトルについて
- Author(s)
  Hiroaki Niikuni
- Organizer
  信州数理物理セミナー
- Place of Presentation
  信州大学工学部若里キャンパス
- Invited
- Data Source
  KAKENHI-PROJECT-25800085
[Presentation] ジグザグナノチューブに付随する量子グラフ上の周期的シュレディンガー作用素のスペクトルについて
- Author(s)
  Hiroaki Niikuni
- Organizer
  Linear and Nonlinear Waves, No.11
- Place of Presentation
  ピアザ淡海　滋賀県立県民交流センター
- Invited
- Data Source
  KAKENHI-PROJECT-25800085
[Presentation] On the spectrum of periodic Schrödinger operators on a quantum graph with the δ-δ-δ vertex conditions
- Author(s)
  Hiroaki Niikuni
- Organizer
  QMATH 12 Mathematical Results in Quantum Mechanics
- Place of Presentation
  Humbolt university of Berlin
- Data Source
  KAKENHI-PROJECT-25800085
[Presentation] ジグザグナノチューブに付随する量子グラフ上の周期的シュレディンガー作用素のスペクトルについて
- Author(s)
  Hiroaki Niikuni
- Organizer
  日本数学会　秋季総合文化会（函数方程式論文化会）
- Place of Presentation
  愛媛大学
- Data Source
  KAKENHI-PROJECT-25800085
[Presentation] ジグザグナノチューブに付随する量子グラフ上の周期的シュレディンガー作用素のスペクトルについて
- Author(s)
  Hiroaki Niikuni
- Organizer
  スペクトル・散乱シンポジウム
- Place of Presentation
  鹿児島大学
- Invited
- Data Source
  KAKENHI-PROJECT-25800085
[Presentation] ジグザグナノチューブに付随する量子グラフ上の周期的シュレディンガー作用素のスペクトルについて
- Author(s)
  Hiroaki Niikuni
- Organizer
  学習院大学スペクトル理論セミナー
- Place of Presentation
  学習院大学
- Invited
- Data Source
  KAKENHI-PROJECT-25800085
[Presentation] ジグザグナノチューブに付随する量子グラフ上の周期的シュレディンガー作用素のスペクトルについて
- Author(s)
  Hiroaki Niikuni
- Organizer
  2013夏の作用素論シンポジウム
- Place of Presentation
  広島大学
- Data Source
  KAKENHI-PROJECT-25800085

Niikuni Hiroaki 新國 裕昭

NIIKUNI Hiroaki 新國 裕昭

Research Projects

Research Products

Quantum graph aspects for graphene and carbon nanotube in non-uniform fieldsPrincipal Investigator

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Studies on spectral band structures on carbon nanotubes and their related topicsPrincipal Investigator

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Analysis of Spectral Gaps of Periodic Schroedinger OperatorsPrincipal Investigator

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A Study in the spectral theory of the periodic Schr?dinger operatorsPrincipal Investigator

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[Journal Article] Schroedinger operators on ice-nanotubes with the delta vertex conditions2023

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[Journal Article] An exact formula for the number of negative eigenvalues for zigzag carbon nanotubes with δ impurities2023

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[Journal Article] Spectra of Graphenes with variant edges2022

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[Journal Article] Edge States of Schroedinger Equations on Graphene with Zigzag Boundaries2021

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[Journal Article] Existence of eigenvalues embedded in the spectral bands of Schr&ouml;dinger operators on carbon nanotubes with impurities2020

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[Journal Article] Schroedinger operators on a Zigzag Supergraphene-Based Carbon Nanotube2018

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[Journal Article] Schr&ouml;dinger operators on a periodically broken zigzag carbon nanotube2017

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[Journal Article] Schroedinger operators on a periodically broken zigzag carbon nanotube2017

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[Journal Article] Spectral band structure of periodic Schr&ouml;dinger operators with two potentials on the degenerate zigzag nanotube2016

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[Journal Article] Decisiveness of the spectral gaps of periodic Schroedinger operators on the dumbbell-like metric graph2015

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[Journal Article] Spectral band structure of periodic Schr&ouml;dinger operators on a generalized degenerate zigzag nanotube2015

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[Journal Article] Spectra of periodic Schrｏｅdinger operators on the degenerate zigzag nanotube with δ type vertex conditions2014

Niikuni Hiroaki 新國裕昭

NIIKUNI Hiroaki 新國裕昭

[Journal Article] Existence of eigenvalues embedded in the spectral bands of Schrödinger operators on carbon nanotubes with impurities2020

[Journal Article] Schrödinger operators on a periodically broken zigzag carbon nanotube2017

[Journal Article] Spectral band structure of periodic Schrödinger operators with two potentials on the degenerate zigzag nanotube2016

[Journal Article] Spectral band structure of periodic Schrödinger operators on a generalized degenerate zigzag nanotube2015