論文 (査読付き)

• Characterization of Player's Interpretations in Classical Keyboard Works Based on Local Structural Analysis of Performance

  Michikazu Kobayashi, Mai Takahashi, and Ikki Ohmukai

  DH2024 Book of Abstracts, 364-367 (2024)

• Analysis of Performance Style by MIDI Piano Recordings

  Mai Takahashi, Michikazu Kobayashi, Eita Nakamura, and Ikki Ohmukai

  Proceedings of the 13th Conference of JADH 2024, 40-41 (2024)

• Control of Metastable States by Heat Flux in the Hamiltonian Potts Model

  Michikazu Kobayashi, Naoko Nakagawa, and Shin-ichi Sasa

  Phys. Rev. Lett. 130, 247102-1-6 (2023) / arXiv:2212.12289

• Proximity effects of vortices in neutron ³P₂ superfluids in neutron stars: Vortex core transitions and covalent bonding of vortex molecules

  Michikazu Kobayashi and Muneto Nitta

  Phys. Rev. C 107, 045801-1-15 (2023) / arXiv:2209.07205

• Characterizing playing style with speed deviation

  Mai Takahashi, Michikazu Kobayashi, and Ikki Ohmukai

  Digital Humanities 2022, 692-695 (2022)

• Core structures of vortices in Ginzburg-Landau theory for neutron ³P₂ superfluids

  Michikazu Kobayashi and Muneto Nitta

  Phys. Rev. C 105, 035807-1-12 (2022) / arXiv:2203.09300

• Spectral analysis for idetifying octave playing piano works

  Mai Takahashi, Michikazu Kobayashi, and Ikki Ohmukai

  Proceedings of JADH conference, 2021, 72-76 (2021)

• Symmetry classification of uniform states in spin-2 Bose-Einstein condensates and neutron ³P₂ superfluids

  Michikazu Kobayashi and Muneto Nitta

  Phys. Rev. A 104, 053302-1-12 (2021) / arXiv:2108.11676

• Quantum turbulence simulations using the Gross–Pitaevskii equation: High-performance computing and new numerical benchmarks

  Michikazu Kobayashi, Philippe Parnaudeau, Francky Luddens, Corentin Lothodéc, Luminita Danaila, Marc Brachet, and Ionut Danaila

  Comp. Phys. Commun. 258, 107579-1-26 (2020) / arXiv:2003.03590

• \(\mathbb{Z}_n\) modified XY and Goldstone models and vortex confinement transition

  Michikazu Kobayashi and Muneto Nitta

  Phys. Rev. D 101, 085003-1-6 (2020) / arXiv:1912.09456

• Vortex confinement transitions in the modified Goldstone model

  Michikazu Kobayashi, Gergely Fejős, Chandrasekhar Chatterjee, and Muneto Nitta

  Phys. Rev. Research. 2, 013081-1-14 (2020) / arXiv:1908.11087

• Berezinskii-Kosterlitz-Thouless transition of two-component Bose mixtures with inter-component Josephson coupling

  Michikazu Kobayashi, Minoru Eto, and Muneto Nitta

  Phys. Rev. Lett. 123, 075303-1-6 (2019) / arXiv:1802.08763

• Berezinskii-Kosterlitz-Thouless transition of spin-1 spinor Bose gases in the presence of the quadratic Zeeman effect

  Michikazu Kobayashi

  J. Phys. Soc. Jpn. 88, 094001-1-16 (2019) / arXiv:1902.00210

• Reexamining Ginzburg-Landau theory for neutron ³P₂ superfluidity in neutron stars

  Shigehiro Yasui, Chandrasekhar Chatterjee, Michikazu Kobayashi, and Muneto Nitta

  Phys. Rev. C 100, 025204-1-15 (2019) / arXiv:1904.11399

• Is a double quantized vortex dynamically unstable in uniform superfluids?

  Hiromitsu Takeuchi, Michikazu Kobayashi and Kenichi Kasamatsu

  J. Phys. Soc. Jpn. 87, 023601-1-5 (2017) / arXiv:1710.10810

• Quench dynamics of the three-dimensional U(1) complex field theory: geometric and scaling characterisation of the vortex tangle

  Michikazu Kobayashi and Leticia F. Cugliandolo

  Phys. Rev. E 94, 062146-1-41 (2016) / arXiv:1609.02431

• Thermal quenches in the stochastic Gross-Pitaevskii equation: Morphology of the vortex network

  Michikazu Kobayashi and Leticia F. Cugliandolo

  Europhys. Lett. 115, 20007-1-6 (2016) / arXiv:1606.03262

• Dynamics of trapped interacting vortices in Bose-Einstein condensates: a role of breathing degree of freedom

  Katsuhiro Nakamura, Doniyor Babajanov, Davron Matrasulov, Michikazu Kobayashi, and Paulsamy Muruganandam

  J. Phys. A: Math. Theor. 49, 315102-1-20 (2016)

• Interpolating relativistic and nonrelativistic Nambu-Goldstone and Higgs modes

  Michikazu Kobayashi and Muneto Nitta

  Phys. Rev. D 92, 045028-1-10 (2015) / arXiv:1505.03299

• Nambu-Goldstone Modes Propagating along Topological Defects: Kelvin and Ripple Modes from Small to Large Systems

  Daisuke Takahashi, Michikazu Kobayashi, and Muneto Nitta

  Phys. Rev. B 91, 184501-1-19 (2015) / arXiv:1501.01874

• Nonrelativistic Nambu-Goldstone Modes Associated with Spontaneously Broken Space-Time and Internal Symmetries

  Michikazu Kobayashi and Muneto Nitta

  Phys. Rev. Lett. 113, 120403-1-5 (2014) / arXiv:1402.6826

• Non-relativistic Nambu-Goldstone modes propagating along a skyrmion line

  Michikazu Kobayashi and Muneto Nitta

  Phys. Rev. D 90, 025010-1-9 (2014) / arXiv:1403.4031

• Color Magnetism in Non-Abelian Vortex Matter

  Michikazu Kobayashi, Eiji Nakano, and Muneto Nitta

  JHEP 06, 130-1-12 (2014) / arXiv:1311.2399

• Torus knots as Hopfions

  Michikazu Kobayashi and Muneto Nitta

  Phys. Lett. B 728, 314-318 (2014) / arXiv:1304.6021

• Vortex polygons and their stabilities in Bose-Einstein condensates and field theory

  Michikazu Kobayashi and Muneto Nitta

  J. Low. Temp. Phys. 175, 208-215 (2014) / arXiv:1307.1345

• Kelvin modes as Nambu-Goldstone modes along superfluid vortices and relativistic strings: finite volume size effects

  Michikazu Kobayashi and Muneto Nitta

  Prog. Theor. Exp. Phys. 021B01-1-6 (2014) / arXiv:1307.6632

• Winding Hopfion on \(R^2 \times S^1 \)

  Michikazu Kobayashi and Muneto Nitta

  Nucl. Phys. B 876, 605-618 (2013) / arXiv:1305.7417

• Fractional vortex molecules and vortex polygons in a baby Skyrme model

  Michikazu Kobayashi and Muneto Nitta

  Phys. Rev. D 87, 125013-1-10 (2013) / arXiv:1307.0242

• Sine-Gordon kinks on a domain wall ring

  Michikazu Kobayashi and Muneto Nitta

  Phys. Rev. D 87, 085003-1-6 (2013) / arXiv:1302.0989

• Quantum hydrodynamics

  Makoto Tsubota, Michikazu Kobayashi, Hiromitsu Takeuchi

  Phys. Rep. 522, 191-238 (2013) / arXiv:1208.0422

• Dynamics of inertial vortices in multicomponent Bose-Einstein condensates

  Katsuhiro Nakamura, Doniyor Babajanov, Davron Matrasulov, and Michikazu Kobayashi

  Phys. Rev. A 86, 053613-1-8 (2012) / arXiv:1212.0198

• Abe homotopy classification of topological excitations under the topological influence of vortices

  Shingo Kobayashi, Michikazu Kobayashi, Yuki Kawaguchi, Muneto Nitta, and Masahito Ueda

  Nucl. Phys. B 856, 577-606 (2012) / arXiv:1110.1478

• Dynamics of one-dimensional supersolids

  Masaya Kunimi, Michikazu Kobayashi, and Yusuke Kato

  J. Phys. Conf. Ser. 400, 012037-1-4 (2012)

• Route to turbulence in a trapped Bose-Einstein condensate

  Jorge A. Seman, Emanuel A. L. Henn, Rodrigo Figueiredo Shiozaki, Giacomo Roati, Freddy Jackson Poveda-Cuevas, Kilvia M. F. Magalhães, Vyacheslav I. Yukalov, Makoto Tsubota, Michikazu Kobayashi, Kenichi Kasamatsu, and Vanderlei Salvador Bagnato

  Laser Phys. Lett. 8, 691-696 (2011) / arXiv:1007.4953

• Physics of non-Abelian vortices in Bose-Einstein condensates

  Michikazu Kobayashi

  J. Phys. Conf. Ser. 297, 012013-1-17 (2011)

• Collision Dynamics of Non-Abelian Vortices in Spinor Bose-Einstein Condensates

  Michikazu Kobayashi, Yuki Kawaguchi, Muneto Nitta, and Masahito Ueda

  J. Low Temp. Phys. 162, 299-306 (2011)

• Topological Excitations in Spinor Bose-Einstein Condensates

  Yuki Kawaguchi, Michikazu Kobayashi, Muneto Nitta, and Masahito Ueda

  Prog. Theor. Phys. Suppl. 186, 455-462 (2010) / arXiv:1006.5839

• Quasi-Nambu-Goldstone Modes in Bose-Einstein Condensates

  Shun Uchino, Michikazu Kobayashi, Muneto Nitta, and Masahito Ueda

  Phys. Rev. Lett. 105, 230406-1-4 (2010) / arXiv:1010.2864

• Particle creation in Bose-Einstein condensates: Theoretical formulation based on conserving gapless mean-field theory

  Yasunari Kurita, Michikazu Kobayashi, Hideki Ishihara, and Makoto Tsubota

  Phys. Rev. A 82, 053602-1-8 (2010) / arXiv:1007.0073

• Bogoliubov thorey and Lee-Huang-Yang corrections in spin-1 and spin-2 Bose-Einstein condensates in the presence of the quadratic Zeeman effect

  Shun Uchino, Michikazu Kobayashi, and Masahito Ueda

  Phys. Rev. A 81, 063632-1-29 (2010) / arXiv:0912.0355

• Stable fractional vortices in the cyclic states of Bose-Einstein condensates

  Jukka Huhtamäki, Tapio Simula, Michikazu Kobayashi, and Kazushige Machida

  Phys. Rev. A 80, 051601(R)-1-4 (2009) / arXiv:0910.2775

• Collision Dynamics and Rung Formation of Non-Abelian Vortices

  Michikazu Kobayashi, Yuki Kawaguchi, Muneto Nitta, and Masahito Ueda

  Phys. Rev. Lett. 103, 115301-1-4 (2009) / arXiv:0810.5441

• Spacetime analog of Bose-Einstein condensates: Bogoliubov-de Gennes formulation

  Yasunari Kurita, Michikazu Kobayashi, Takao Morinari, Makoto Tsubota, and Hideki Ishihara

  Phys. Rev. A 79, 043616-1-8 (2009) / arXiv:0810.3088

• Particle creation in Bose-Einstein condensates: Numerical analysis of the Bogoliubov-de Gennes equation for trapped ultracold atoms

  Michikazu Kobayashi, Yasunari Kurita, Takao Morinari, Makoto Tsubota, and Hideki Ishihara

  Journal of Physics: Conference Series 150, 032044-1-4 (2009)

• Quantum Turbulence in a Trapped Bose-Einstein Condensate under Combined Rotations around Three Axes

  Michikazu Kobayashi and Makoto Tsubota

  J. Low Temp. Phys. 150, 587-592 (2008)

• Quantum turbulence in trapped atomic Bose-Einstein condensates

  Makoto Tsubota and Michikazu Kobayashi

  J. Low Temp. Phys. 150, 402-409 (2008)

• Quantum Turbulence in a Trapped Bose-Einstein Condensate

  Michikazu Kobayashi and Makoto Tsubota

  Phys. Rev. A 76, 045603-1-4 (2007) / arXiv:cond-mat/0703603

• Dissipation of Gross-Pitaevskii Turbulence Coupled with Thermal Excitations

  Michikazu Kobayashi and Makoto Tsubota

  J. Low Temp. Phys. 148, 275-279 (2007)

• Thermal dissipation in quantum turbulence

  Michikazu Kobayashi and Makoto Tsubota

  Phys. Rev. Lett. 97, 145301-1-4 (2006) / arXiv:cond-mat/0607434

• Decay of Quantized Vortices in Quantum Turbulence

  Michikazu Kobayashi and Makoto Tsubota

  J. Low Temp. Phys. 145, 209-218 (2006) / pdf before submit

• Inertial Range and the Kolmogorov Spectrum of Quantum Turbulence

  Makoto Tsubota and Michikazu Kobayashi

  AIP Conference Proceedings series 850, 219-220 (2006) / arXiv:cond-mat/0507049

• Localization of Bose-Einstein Condensate and Disappearance of Superfluidity of Strongly Correlated Bose Fluid in a Confined Potential

  Michikazu Kobayashi and Makoto Tsubota

  AIP Conference Proceedings series 850, 287-288 (2006) / arXiv:cond-mat/0507050

• Kolmogorov Spectrum of Quantum Turbulencee

  Michikazu Kobayashi and Makoto Tsubota

  J. Phys. Soc. Jpn. 74, 3248-3258 (2005) / arXiv:cond-mat/0508624

• Kolmogorov Spectrum of the Gross-Pitaevskii Turbulence

  Makoto Tsubota and Michikazu Kobayashi

  J. Phys. Chem. Sol. 66, 1498-1500 (2005)

• Kolmogorov Spectrum of Superfluid Turbulence: Numerical Analysis of the Gross-Pitaevskii Equation with a Small-Scale Dissipation

  Michikazu Kobayashi and Makoto Tsubota

  Phys. Rev. Lett. 94, 065302-1-4 (2005) / arXiv:cond-mat/0411750

• Bose-Einstein Condensation and Superfluidity of Strongly Correlated Bose Fluid in a Random Potential

  Michikazu Kobayashi and Makoto Tsubota

  J. Low Temp. Phys. 138, 189-194 (2005)

• Energy spectrum of superfluid turbulence: Numerical analysis of the Gross-Pitaevskii equation with the small scale dissipation

  Michikazu Kobayashi

  Bussei Kenkyu 84, 457-458 (2005)

• Superfluid-Insulator Transition of a Bose-Einstein Condensation in a Periodic Potential and its Interference Pattern

  Michikazu Kobayashi and Makoto Tsubota

  J. Low Temp. Phys. 134, 665-670 (2004)

• ランダムポテンシャル中の希薄ボース気体のボース凝縮と超流動

  小林未知数

  物性研究 80-5, 729-767 (2003)

• Bose-Einstein condensation and superfluidity of dirty Bose gas

  Michikazu Kobayashi and Makoto Tsubota

  Physica B 329-333, 212-213 (2003)

• Superfluidity of disordered Bose system: numerical analysis of the Gross-Pitaevskii equation with random potential

  Michikazu Kobayashi, Makoto Tsubota, and Takeshi Iida

  Physica B 329-333, 210-211 (2003)

• Bose-Einstein condensation and superfluidity of a dilute Bose gas in a random potential

  Michikazu Kobayashi and Makoto Tsubota

  Phys. Rev. B 66, 174516-1-7 (2002) / arXiv:cond-mat/0202364

論文 (ArXivのみ)

• Quantum Knots that Never Come Untied

  Michikazu Kobayashi, Yuta Nozaki, Yuya Koda, and Muneto Nitta

  arXiv:2410.07470

• Universal Critical Behavior at a Phase Transition to Quantum Turbulence

  Masahiro Takahashi, Michikazu Kobayashi, and Kazumasa A. Takeuchi

  arXiv:1609.01561

• Topologically protected helicity cascade in non-Abelian quantum turbulence

  Michikazu Kobayashi and Masahito Ueda

  arXiv:1606.07190

• Toroidal domain walls as Hopfion

  Michikazu Kobayashi and Muneto Nitta

  arXiv:1304.6021

• Vortex Tiling in a Spin-2 Spinor Bose-Einstein Condensate

  Michikazu Kobayashi, Yuki Kawaguchi, Masahito Ueda

  arXiv:0907.3716

• Quantum Phase Transition from Superfluid to Localized Condensates of Bose Fluid in a Confined Potential

  Michikazu Kobayashi and Makoto Tsubota

  arXiv:cond-mat/0510335

論文 (査読なし)

• ピアノ演奏MIDIデータに基づいたフレーズ・アーチングの分析

  高橋舞、小林未知数、大向一輝、中村栄太

  研究報告音楽情報科学 (MUS) 2025-MUS-142, 60, 1-6 (2025)

• ピアノコンクールの審査結果における フレーズ・アーチングの分析

  高橋舞、小林未知数、中村栄太、大向一輝

  日本音楽認知学会資料 JSMPC2024(1), 17-22 (2024)

• MIDIピアノを用いたピアノコンクールの合格者と不合格者の演奏における拍間隔変化の比較

  高橋舞、小林未知数、中村栄太、大向一輝

  情報処理学会研究報告 2024-CH-134, No. 8 (2024)

• 原子気体ボース・アインシュタイン凝縮体を用いた量子乱流研究の実現

  小林未知数

  応用力学研究所研究集会報告 19ME-S7, 130 (2008)

• 有限温度の減衰量子乱流における散逸構造の研究

  小林未知数

  応用力学研究所研究集会報告 18ME-S7, 16 (2007)

• 量子乱流における慣性領域とコルモゴロフ則

  小林未知数

  数理解析研究所講究録 1496, 52-58 (2006)

• 量子流体における乱流現象とエネルギースペクトル：Gross-Pitaevskii方程式による解析

  小林未知数

  数理解析研究所講究録 1434, 63-72 (2005)

• Gross-Pitaevskii方程式における超流動乱流のエネルギースペクトル

  小林未知数

  数理解析研究所講究録 1413, 231-238 (2005)

書籍

• 量子流体力学

  坪田誠、笠松健一、小林未知数、竹内宏光

  丸善出版 (2018)

• Quantized vortices in superfluid helium and atomic Bose-Einstein condensates

  Makoto Tsubota, Kenichi Kasamatsu, and Michikazu Kobayashi

  Novel Superfluids Volume 1, 156-252, Oxford University Press (2013)

解説記事

• スピノル・ボース・アインシュタイン凝縮で実現する非可換量子渦と，その衝突ダイナミクス

  小林未知数，川口由紀，新田宗土，上田正仁

  日本物理学会誌「最近の研究から」 65（8月号）, 625 (2010)

• ボース・アインシュタイン凝縮体における粒子生成 -曲った時空とのアナロジー-

  栗田泰生，小林未知数，森成隆夫，坪田誠，石原秀樹

  日本物理学会誌「最近の研究から」 65（3月号）, 187 (2010)

• 非可換量子渦の衝突とラング渦形成のダイナミクス

  小林未知数

  物性研究 94, No. 1, （シリーズ）「超伝導・超流動研究の接点」 53 (2010)

• Energy spectra in quantum turbulence

  Makoto Tsubota and Michikazu Kobayashi

  Prog. Low Temp. Phys., ed. W. P. Halperin and M. Tsubota (Elsevier, Amsterdam, 2008) 16, 1

• 量子乱流研究の最新の発展

  坪田誠、小林未知数

  日本物理学会誌 62（1月号） 15 (2007)

受賞

• 第5回(2010年)凝縮系科学賞

  「量子乱流に関する理論的研究」

• 第4回(2010年)日本物理学会若手奨励賞（領域6）

  「量子乱流の数値解析研究」