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J-GLOBAL ID:200901071507527445   Update date: Jan. 30, 2024

Nishiyama Yoshihiro

ニシヤマ ヨシヒロ | Nishiyama Yoshihiro
Affiliation and department:
Job title: Assistant Professor
Research field  (1): Mathematical physics and basic theory
Research keywords  (2): 相転移 多体問題 ,  相転移 多体問題
Research theme for competitive and other funds  (6):
  • 2020 - 2025 (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
  • 2013 - 2018 Quantum Novotny method as an alternative DMRG and deconfined criticality
  • 2006 - 2008 Novotny's transfer matrix method for the high dimensional systems : An extension of DMRG
  • 2006 - 2008 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-
  • 2003 - 2005 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-
Show all
Papers (14):
  • Yoshihiro Nishiyama. Transverse-field XY spin chain with the competing long-range interactions: multi-criticality around the XX-symmetric point. Journal of Statistical Mechanics: Theory and Experiment. 2023. 2023. 8. 083102-083102
  • Yoshihiro Nishiyama. 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 anisotropy. The European Physical Journal B. 2023. 96. 7
  • Yoshihiro Nishiyama. Criticality of the excess energy cost due to the unit-flux-quantum external field for the (2 + 1)D superfluid-insulator transition. Journal of Statistical Mechanics: Theory and Experiment. 2022. 2022. 3. 033102-033102
  • Yoshihiro Nishiyama. Fidelity-mediated analysis of the transverse-field XY chain with the long-range interactions: anisotropy-driven multi-criticality. The European Physical Journal B. 2021. 94. 11
  • Yoshihiro Nishiyama. Two-dimensional easy-plane SU(3) magnet with the transverse field: anisotropy-driven multicriticality. Journal of Statistical Mechanics: Theory and Experiment. 2021. 2021. 3. 033103-033103
more...
MISC (83):
Lectures and oral presentations  (33):
  • 二次元反強磁性イジング模型における虚数磁場フィデリティ感受率の計算
    (日本物理学会第74回年次大会 2020)
  • 長距離相互作用量子イジング鎖におけるマグノン束縛状態の臨界現象
    (日本物理学会2018年秋季大会 2018)
  • 二次元量子ポッツ模型の秩序相の素励起ヒエラルキー
    (日本物理学会第72回年次大会 2017)
  • (d,m)=(3,2)型リフシッツ点の臨界性:2+1次元gonihedric模型
    (日本物理学会第62回年次大会 2007)
  • 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
    (日本物理学会2007年春季大会 2007)
more...
Professional career (1):
  • 博士(理学) (東京大学)
Association Membership(s) (1):
日本物理学会
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