Yoshihiro Nishiyama 西山由弘

… Alternative Names

西山由弘ニシヤマヨシヒロ

NISHIYAMA Yoshihiro 西山由弘

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Researcher Number	60294401
Other IDs
Affiliation (Current)	2025: 岡山大学, 環境生命自然科学学域, 助教
Affiliation (based on the past Project Information) *help	2023: 岡山大学, 環境生命自然科学学域, 助教 2021 – 2022: 岡山大学, 自然科学学域, 助教 2020: 岡山大学, 自然科学研究科, 助教 2013 – 2017: 岡山大学, 自然科学研究科, 助教 2007 – 2008: Okayama University, 大学院・自然科学研究科, 助教 … More 2007: 岡山大, 自然科学研究科, 助手 2005 – 2006: 岡山大学, 大学院自然科学研究科, 助手 2002 – 2004: 岡山大学, 大学院・自然科学研究科, 助手 2001: 岡山大学, 理学部, 助手 Less
Review Section/Research Field	Principal Investigator Mathematical physics/Fundamental condensed matter physics / Basic Section 13010:Mathematical physics and fundamental theory of condensed matter physics-related / 物性一般(含基礎論)
Keywords	Principal Investigator 臨界現象 / イジング模型 / ノボトニー法 / 高次元 / 相転移 / 対角化 / 密度行列繰り込み群 / ソフトマテリアル / 繰り込み / 脂質膜 … More / 虚数磁場 / 容易面型磁性体 / 有限サイズスケーリング / 量子スピン / フラストレーション / 高次元量子系 / 基底状態相転移 / 厳密対角化 / ハイゼンベルク模型 / 量子磁性体 / 量子スピン系 / ストリップテーゼ / パーコレーション / 繰り込み群 / 臨界指数 / 数値対角化 / ランチョス法 / スクーリング / 計算物理学 / 物性基礎論 / 統計物理学 / ランチョヌ法 / スケーリング / しわくちゃ転移 / 転送行列 / 潜熱 / 弱い一次転移 / フラット転移 / 高分子膜 / 量子ゆらぎ / 量子紐 / ストライプ相 / 衝突エントロピー / 曲げ弾性 Less

Research Projects
(6 results)
Research Products
(41 results)

（２＋１）Ｄの交流伝導率やスペクトル関数の臨界性ーＣＰ，Ｏ（Ｎ）系へのプローブーPrincipal Investigator
- Principal Investigator
  
  西山由弘
- Project Period (FY)
  2020 – 2024
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Review Section
  
  Basic Section 13010:Mathematical physics and fundamental theory of condensed matter physics-related
- Research Institution
  Okayama University
Quantum Novotny method as an alternative DMRG and deconfined criticalityPrincipal Investigator
- Principal Investigator
  
  Yoshihiro Nishiyama
- Project Period (FY)
  2013 – 2017
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Research Field
  
  Mathematical physics/Fundamental condensed matter physics
- Research Institution
  Okayama University
ノボトニー法による高次元系の転送行列の構成と応用-DMRG的な利点を高次元系へ-Principal Investigator
- Principal Investigator
  
  西山由弘
- Project Period (FY)
  2006 – 2008
- Research Institution
  Okayama University
Novotny's transfer matrix method for the high dimensional systems : An extension of DMRGPrincipal Investigator
- Principal Investigator
  
  NISHIYAMA Yoshihiro
- Project Period (FY)
  2006 – 2008
- Research Category
  
  Grant-in-Aid for Young Scientists (B)
- Research Field
  
  Mathematical physics/Fundamental condensed matter physics
- Research Institution
  Okayama University
密度行列繰り込み群のソフトマターへの応用-脂質膜の実効曲げ弾性係数の解析-Principal Investigator
- Principal Investigator
  
  西山由弘
- Project Period (FY)
  2003 – 2005
- Research Category
  
  Grant-in-Aid for Young Scientists (B)
- Research Field
  
  Mathematical physics/Fundamental condensed matter physics
- Research Institution
  Okayama University
密度行列繰り込み群によるボソニックな自由度の解析Principal Investigator
- Principal Investigator
  
  西山由弘
- Project Period (FY)
  2001 – 2002
- Research Category
  
  Grant-in-Aid for Young Scientists (B)
- Research Field
  
  物性一般(含基礎論)
- Research Institution
  Okayama University

[Journal Article] Transverse-field XY spin chain with the competing long-range interactions: multi-criticality around the XX-symmetric point2023
- Author(s)
  Nishiyama Yoshihiro
- Journal Title
  
  Journal of Statistical Mechanics: Theory and Experiment
  
  Volume: 2023 Issue: 8 Pages: 083102-083102
- DOI
  10.1088/1742-5468/aceb55
- Data Source
  KAKENHI-PROJECT-20K03767
[Journal Article] End-point singularity of the XY-paramagnetic phase boundary for the $$(2+1)$$D $$S=1$$ square-lattice $$J_1$$?$$J_2$$ XY model with the single-ion anisotropy2023
- Author(s)
  Nishiyama Yoshihiro
- Journal Title
  
  The European Physical Journal B
  
  Volume: 96 Issue: 7 Pages: 1-7
- DOI
  10.1140/epjb/s10051-023-00566-3
- Data Source
  KAKENHI-PROJECT-20K03767
[Journal Article] Criticality of the excess energy cost due to the unit-flux-quantum external field for the (2 + 1)D superfluid?insulator transition2022
- Author(s)
  Nishiyama Yoshihiro
- Journal Title
  
  Journal of Statistical Mechanics: Theory and Experiment
  
  Volume: 2022 Issue: 3 Pages: 033102-033102
- DOI
  10.1088/1742-5468/ac5cb2
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20K03767
[Journal Article] Fidelity-mediated analysis of the transverse-field $XY$ chain with the long-range interactions: Anisotropy-driven multi-criticality Yoshihiro Nishiyama2021
- Author(s)
  Yoshihiro Nishiyama
- Journal Title
  
  European Physical Journal B
  
  Volume: 94 Issue: 11 Pages: 226-226
- DOI
  10.1140/epjb/s10051-021-00245-1
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20K03767
[Journal Article] Two-dimensional easy-plane SU(3) magnet with the transverse field: anisotropy-driven multicriticality2021
- Author(s)
  Yoshihiro Nishiyama
- Journal Title
  
  Journal of Statistical Mechanics
  
  Volume: 2021 Issue: 3 Pages: 033103-033103
- DOI
  10.1088/1742-5468/abe412
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20K03767
[Journal Article] Fidelity-susceptibility analysis of the honeycomb-lattice Ising antiferromagnet under the imaginary magnetic field2020
- Author(s)
  Yoshihiro Nishiyama
- Journal Title
  
  European physical Journal B
  
  Volume: 93 Issue: 9 Pages: 174-7
- DOI
  10.1140/epjb/e2020-10264-5
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20K03767
[Journal Article] Imaginary-field-driven phase transition for the 2D Ising antiferromagnet: A fidelity-susceptibility approach2020
- Author(s)
  Yoshihiro Nishiyama
- Journal Title
  
  Physica A
  
  Volume: 555 Pages: 124731-9
- DOI
  10.1016/j.physa.2020.124731
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20K03767
[Journal Article] Hierarchy of the low-lying excitations for the (2+1)-dimensional q=3 Potts model in the ordered phase2017
- Author(s)
  Y Nishiyama
- Journal Title
  
  Nucl. Phys. B
  
  Volume: 916 Pages: 28-36
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-25400402
[Journal Article] Duality-mediated critical amplitude ratios for the (2+1)-dimensional S=1 XY model,2017
- Author(s)
  Y Nishiyama
- Journal Title
  
  Eur. Phys. J. B
  
  Volume: 90 Pages: 173-173
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-25400402
[Journal Article] Universal scaled Higgs-mass gap for the bilayer Heisenberg model in the ordered phase2016
- Author(s)
  Yoshihiro Nishiyama
- Journal Title
  
  Eur. Phys. J. B
  
  Volume: 89
- Peer Reviewed / Acknowledgement Compliant / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-25400402
[Journal Article] Magnon-bound-state hierarchy for the two-dimensional transverse-field Ising model in the ordered phase2016
- Author(s)
  Yoshihiro Nishiyama
- Journal Title
  
  Physica A
  
  Volume: 463 Pages: 303-303
- Peer Reviewed / Acknowledgement Compliant / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-25400402
[Journal Article] Critical behavior of the Higgs- and Goldstone-mass gaps for the two-dimensional S=1 XY model2015
- Author(s)
  Yoshihiro Nishiyama
- Journal Title
  
  Nucl. Phys. B
  
  Volume: 897 Pages: 555-562
- Peer Reviewed / Acknowledgement Compliant
- Data Source
  KAKENHI-PROJECT-25400402
[Journal Article] Deconfined criticality for the two-dimensional quantum S=1-spin model with the three-spin and biquadratic interactions2015
- Author(s)
  Yoshihiro Nishiyama
- Journal Title
  
  Eur. Phys. J. B
  
  Volume: 88 Pages: 71-6
- Peer Reviewed / Acknowledgement Compliant
- Data Source
  KAKENHI-PROJECT-25400402
[Journal Article] Universal critical behavior of the two-magnon-bound-state mass gap for the (2+1)-dimensional Ising model2014
- Author(s)
  Yoshihiro Nishiyama
- Journal Title
  
  Physica A
  
  Volume: 413 Pages: 577-582
- DOI
  10.1016/j.physa.2014.07.025
- Peer Reviewed / Acknowledgement Compliant
- Data Source
  KAKENHI-PROJECT-25400402
[Journal Article] Criticalities of the transverse- and longitudinal-field fidelity susceptibilities for the d=2 quantum Ising model2013
- Author(s)
  Yoshihiro Nishiyama
- Journal Title
  
  Phys. Rev. E
  
  Volume: 88 Pages: 12129-12129
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-25400402
[Journal Article] Critical behavior of the fidelity susceptibility for the d=2 transverse-field Ising model2013
- Author(s)
  Yoshihiro Nishiyama
- Journal Title
  
  Physica A
  
  Volume: 392 Pages: 4345-4350
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-25400402
[Journal Article] Numerical diagonalization analysis of the criticality of the (2+1)-dimensional XY model : Off-diagonal Novotny's method2008
- Author(s)
  Yoshihiro Nishiyama,
- Journal Title
  
  Phys. Rev. E 78
- Data Source
  KAKENHI-PROJECT-18740234
[Journal Article] Bound-state energy of the three-dimensional Ising model in the broken-symmetry phase : Suppressed finite-size corrections2008
- Author(s)
  Yoshihiro Nishiyama
- Journal Title
  
  Phys. Rev. E 77
- Data Source
  KAKENHI-PROJECT-18740234
[Journal Article] Numerical diagonaligation analysis of the criticality of the 2+1 dimensional XY model2008
- Author(s)
  Yoshihiro Nishiyama
- Journal Title
  
  Physical Review E 78
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-18740234
[Journal Article] Bound state energy of the three dimensional Ising model in the broken symmetry phase2008
- Author(s)
  Yoshihiro Nishiyama
- Journal Title
  
  Physical Review E 77
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-18740234
[Journal Article] Multieriticality of the (2+1)-dimensianal goniheduc model2007
- Author(s)
  Yoshihiro Nishiyama
- Journal Title
  
  Physical Review E 75
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-18710231
[Journal Article] Finite sige scaeing of the d=5 Ising modelembedecl in a dcyeindricae geometry.2007
- Author(s)
  Yoshihiro Nishiyama
- Journal Title
  
  Physical Review E 75
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-18710231
[Journal Article] Multicriticality of the (2+1) -dimensional gonihedric model : A realization of the (d,m)=(3,2) Lifshitz point2007
- Author(s)
  Yoshihiro Nishiyama
- Journal Title
  
  Phys. Rev. E 75
- Data Source
  KAKENHI-PROJECT-18740234
[Journal Article] Finite-size scaling of the d=5 Ising model embedded in a cylindrical geometry : The influence of hyperscaling violation2007
- Author(s)
  Yoshihiro Nishiyama
- Journal Title
  
  Phys. Rev. E 75
- Data Source
  KAKENHI-PROJECT-18740234
[Journal Article] Transfer matrix approach to three dimensional bond percolation : An approach of Novotny's formalism2006
- Author(s)
  Yoshihiro Nishiyama
- Journal Title
  
  Physical Review E 73
- Data Source
  KAKENHI-PROJECT-18740234
[Journal Article] Transfer-matrix approach to the three-dimensional bond percolation : An application of Novotny's formalism2006
- Author(s)
  Yoshihiro Nishiyama
- Journal Title
  
  Phys. Rev. E 73
- Data Source
  KAKENHI-PROJECT-18740234
[Journal Article] Eliminated corrections to scaling around a renormalization-group fixed point : Transfer-matrix simulation of an extended d=3 Ising model2006
- Author(s)
  Yoshihiro Nishiyama
- Journal Title
  
  Phys. Rev. E 74
- Data Source
  KAKENHI-PROJECT-18740234
[Journal Article] Eliminated corrections to scaling around a renormaligation fixed point2006
- Author(s)
  Yoshihiro Nishiyama
- Journal Title
  
  Physical Review E 74
- Data Source
  KAKENHI-PROJECT-18740234
[Journal Article] Finite-size-scaling analysis of the XY universality class between d=2 and 32005
- Author(s)
  Yoshihiro Nishiyama
- Journal Title
  
  Physical Review E 71
- Data Source
  KAKENHI-PROJECT-15740238
[Journal Article] Folding of the triangular lattice in a discrete three-dimensional space2005
- Author(s)
  Yoshihiro Nishiyama
- Journal Title
  
  Physical Review E 72
- Data Source
  KAKENHI-PROJECT-15740238
[Journal Article] Folding of the triangular lattice in a discrete three dimensional space2004
- Author(s)
  Y.Nishiyama
- Journal Title
  
  Physical Review E 70
  
  Pages: 16101-16101
- Data Source
  KAKENHI-PROJECT-15740238
[Journal Article] Multi-criticality of the three-dimensional Ising model with plaquette interactions2004
- Author(s)
  Y.Nishiyama
- Journal Title
  
  Physical Review E 70
  
  Pages: 26120-26120
- Data Source
  KAKENHI-PROJECT-15740238
[Presentation] (2+1)次元イジング模型のマグノン束縛状態のスペクトル系列2016
- Author(s)
  西山由弘
- Organizer
  日本物理学会2016年秋季大会
- Place of Presentation
  金沢大学
- Data Source
  KAKENHI-PROJECT-25400402
[Presentation] 多スピン相互作用のある空間異方的量子磁性体における脱閉じ込め臨界現象2015
- Author(s)
  西山由弘
- Organizer
  日本物理学会第70回年次大会
- Place of Presentation
  早稲田大学
- Year and Date
  2015-03-21
- Data Source
  KAKENHI-PROJECT-25400402
[Presentation] (2+1)次元イジング模型の素励起対のユニバーサルな束縛エネルギー2014
- Author(s)
  西山由弘
- Organizer
  日本物理学会2014年秋季大会
- Place of Presentation
  中部大学
- Year and Date
  2014-09-13
- Data Source
  KAKENHI-PROJECT-25400402
[Presentation] スクリュー境界条件の下での三角格子反強磁性体の相図2009
- Author(s)
  西山由弘
- Organizer
  日本物理学会第64回年次大会
- Place of Presentation
  立教大学
- Year and Date
  2009-03-27
- Data Source
  KAKENHI-PROJECT-18740234
[Presentation] 3Dイジング模型の秩序相における素励起対のユニバーサルな束縛エネルギー2008
- Author(s)
  西山由弘
- Organizer
  日本物理学会第63回年次大会
- Place of Presentation
  近畿大学
- Year and Date
  2008-03-23
- Data Source
  KAKENHI-PROJECT-18740234
[Presentation] (d,m)=(3,2)型リフシッツ点の臨界性:$2+1$次元gonihedric模型2007
- Author(s)
  西山由弘
- Organizer
  日本物理学会第62回年次大会
- Place of Presentation
  北海道大学
- Year and Date
  2007-09-22
- Data Source
  KAKENHI-PROJECT-18740234
[Presentation] d=5イジング模型の有限サイズスケーリング:ハイパースケーリングの破れの影響2007
- Author(s)
  西山由弘
- Organizer
  日本物理学会2007年春季大会
- Place of Presentation
  鹿児島大学
- Year and Date
  2007-03-19
- Data Source
  KAKENHI-PROJECT-18740234
[Presentation] 繰り込み固定点付近での有限サイズスケーリング補正の軽減2006
- Author(s)
  西山由弘
- Organizer
  日本物理学会2006年秋季大会
- Place of Presentation
  千葉大学
- Year and Date
  2006-09-23
- Data Source
  KAKENHI-PROJECT-18740234
[Presentation] 二次元横磁場イジング模型の縦及び横成分fidelity感受率の臨界性
- Author(s)
  西山由弘
- Organizer
  日本物理学会
- Place of Presentation
  徳島大学
- Data Source
  KAKENHI-PROJECT-25400402

Yoshihiro Nishiyama 西山 由弘

西山 由弘 ニシヤマ ヨシヒロ

NISHIYAMA Yoshihiro 西山 由弘

Research Projects

Research Products

（２＋１）Ｄの交流伝導率やスペクトル関数の臨界性ーＣＰ，Ｏ（Ｎ）系へのプローブーPrincipal Investigator

Principal Investigator

Project Period (FY)

Research Category

Review Section

Research Institution

Quantum Novotny method as an alternative DMRG and deconfined criticalityPrincipal Investigator

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

ノボトニー法による高次元系の転送行列の構成と応用-DMRG的な利点を高次元系へ-Principal Investigator

Principal Investigator

Project Period (FY)

Research Institution

Novotny's transfer matrix method for the high dimensional systems : An extension of DMRGPrincipal Investigator

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

密度行列繰り込み群のソフトマターへの応用-脂質膜の実効曲げ弾性係数の解析-Principal Investigator

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

密度行列繰り込み群によるボソニックな自由度の解析Principal Investigator

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

[Journal Article] Transverse-field XY spin chain with the competing long-range interactions: multi-criticality around the XX-symmetric point2023

Author(s)

Journal Title

DOI

Data Source

[Journal Article] End-point singularity of the XY-paramagnetic phase boundary for the $$(2+1)$$D $$S=1$$ square-lattice $$J_1$$?$$J_2$$ XY model with the single-ion anisotropy2023

Author(s)

Journal Title

DOI

Data Source

[Journal Article] Criticality of the excess energy cost due to the unit-flux-quantum external field for the (2 + 1)D superfluid?insulator transition2022

Author(s)

Journal Title

DOI

Data Source

[Journal Article] Fidelity-mediated analysis of the transverse-field $XY$ chain with the long-range interactions: Anisotropy-driven multi-criticality Yoshihiro Nishiyama2021

Author(s)

Journal Title

DOI

Data Source

[Journal Article] Two-dimensional easy-plane SU(3) magnet with the transverse field: anisotropy-driven multicriticality2021

Author(s)

Journal Title

DOI

Data Source

[Journal Article] Fidelity-susceptibility analysis of the honeycomb-lattice Ising antiferromagnet under the imaginary magnetic field2020

Author(s)

Journal Title

DOI

Data Source

[Journal Article] Imaginary-field-driven phase transition for the 2D Ising antiferromagnet: A fidelity-susceptibility approach2020

Author(s)

Journal Title

DOI

Data Source

[Journal Article] Hierarchy of the low-lying excitations for the (2+1)-dimensional q=3 Potts model in the ordered phase2017

Author(s)

Journal Title

Data Source

[Journal Article] Duality-mediated critical amplitude ratios for the (2+1)-dimensional S=1 XY model,2017

Author(s)

Yoshihiro Nishiyama 西山由弘

西山由弘ニシヤマヨシヒロ

NISHIYAMA Yoshihiro 西山由弘