Updated on 2023/04/13

写真a

 
Kanki Kazuki
 
Organization
Graduate School of Science Department of Physics Associate Professor
School of Science Department of Physics
Title
Associate Professor
Affiliation
Institute of Science

Position

  • Graduate School of Science Department of Physics 

    Associate Professor  2022.04 - Now

  • School of Science Department of Physics 

    Associate Professor  2022.04 - Now

Degree

  • 博士(理学) ( Others )

Research Areas

  • Natural Science / Magnetism, superconductivity and strongly correlated systems

  • Natural Science / Mathematical physics and fundamental theory of condensed matter physics

Research Interests

  • 非平衡統計力学

  • 電子相関

  • 超伝導

  • 相転移

  • Superconductivity

  • Phase Transition

  • nonequilibrium statistical mechanics

  • Electron Correlation

Research subject summary

  • リウビル演算子の複素固有値問題

  • ポーラロンの運動論的取り扱い

  • 量子輸送過程の理論

Research Career

  • リウビル演算子の複素固有値問題

    International Joint Research

    2009 - Now 

Professional Memberships

  • 日本物理学会

Papers

  • Coherent single-spin electron resonance spectroscopy manifested at an exceptional-point singularity in doped polyacetylene

    Yujin Dunham, Kazuki Kanki, Savannah Garmon, Satoshi Tanaka, Gonzalo Ordonez

    Physical Review A   2021.04

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1103/PhysRevA.103.043513

  • Coherent single-spin electron resonance spectroscopy manifested at an exceptional-point singularity in doped polyacetylene Reviewed

    Yujin Dunham, Kazuki Kanki, Savannah Garmon, Satoshi Tanaka, Gonzalo Ordonez

    Physical Review A 雑誌   103 ( 4 )   2021.04

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    Kind of work:Joint Work  

  • Anomalous Diffusion with an Apparently Negative Diffusion Coefficient in a One-Dimensional Quantum Molecular Chain Model

    Sho Nakade, Kazuki Kanki, Satoshi Tanaka, Tomio Petrosky

    Symmetry   13 ( 3 )   506 - 506   2021.03

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    Publishing type:Research paper (scientific journal)  

    An interesting anomaly in the diffusion process with an apparently negative diffusion coefficient defined through the mean-square displacement in a one-dimensional quantum molecular chain model is shown. Nevertheless, the system satisfies the H-theorem so that the second law of thermodynamics is satisfied. The reason why the “diffusion constant” becomes negative is due to the effect of the phase mixing process, which is a characteristic result of the one-dimensionality of the system. We illustrate the situation where this negative “diffusion constant” appears.

    DOI: 10.3390/sym13030506

  • Anomalous Diffusion with an Apparently Negative Diffusion Coefficient in a One-Dimensional Quantum Molecular Chain Model Reviewed

    Sho Nakade, Kazuki Kanki, Satoshi Tanaka, Tomio Petrosky

    Symmetry 雑誌   13 ( 3 )   2021.03

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    Kind of work:Joint Work  

  • Dissipative dynamical Casimir effect in terms of complex spectral analysis in the symplectic Floquet space

    Satoshi Tanaka, Kazuki Kanki

    Progress of Theoretical and Experimental Physics   2020.12

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1093/ptep/ptaa129

  • Dissipative dynamical Casimir effect in terms of complex spectral analysis in the symplectic Floquet space Reviewed

    Satoshi Tanaka, Kazuki Kanki

    Progress of Theoretical and Experimental Physics 雑誌   2020 ( 12 )   2020.12

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    Kind of work:Joint Work  

  • Anomalous diffusion of a quantum Brownian particle in a one-dimensional molecular chain Reviewed

    Sho Nakade, Kazuki Kanki, Satoshi Tanaka, Tomio Petrosky

    Physical Review E 雑誌   102 ( 3 )   2020.09

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    Kind of work:Joint Work  

  • Anomalous diffusion of a quantum Brownian particle in a one-dimensional molecular chain

    Sho Nakade, Kazuki Kanki, Satoshi Tanaka, Tomio Petrosky

    PHYSICAL REVIEW E   102 ( 3 )   2020.09( ISSN:1539-3755

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    Publishing type:Research paper (scientific journal)  

    We discuss anomalous relaxation processes of a quantum Brownian particle which interacts with an acoustic phonon field as a thermal reservoir in one-dimensional chain molecule. We derive a kinetic equation for the particle using the complex spectral representation of the Liouville-von Neumann operator. Due to the onedimensionality, the momentum space separates into infinite sets of disjoint irreducible subspaces dynamically independent of one another. Hence, momentum relaxation occurs only within each subspace toward the Maxwell distribution. We obtain a hydrodynamic mode with transport coefficients, a sound velocity, and a diffusion coefficient, defined in each subspace. Moreover, because the sound velocity has momentum dependence, phase mixing affects the broadening of the spatial distribution of the particle in addition to the diffusion process. Due to the phase mixing, the increase rate of the mean-square displacement of the particle increases linearly with time and diverges in the long-time limit.

    DOI: 10.1103/PhysRevE.102.032137

  • Anomalous diffusion of a quantum Brownian particle in a one-dimensional molecular chain

    Sho Nakade, Kazuki Kanki, Satoshi Tanaka, Tomio Petrosky

    Physical Review E   102 ( 3 )   2020.09( ISSN:2470-0045

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    Publishing type:Research paper (scientific journal)  

    © 2020 American Physical Society. We discuss anomalous relaxation processes of a quantum Brownian particle which interacts with an acoustic phonon field as a thermal reservoir in one-dimensional chain molecule. We derive a kinetic equation for the particle using the complex spectral representation of the Liouville-von Neumann operator. Due to the one-dimensionality, the momentum space separates into infinite sets of disjoint irreducible subspaces dynamically independent of one another. Hence, momentum relaxation occurs only within each subspace toward the Maxwell distribution. We obtain a hydrodynamic mode with transport coefficients, a sound velocity, and a diffusion coefficient, defined in each subspace. Moreover, because the sound velocity has momentum dependence, phase mixing affects the broadening of the spatial distribution of the particle in addition to the diffusion process. Due to the phase mixing, the increase rate of the mean-square displacement of the particle increases linearly with time and diverges in the long-time limit.

    DOI: 10.1103/PhysRevE.102.032137

    PubMed

  • The Dynamical Casimir Effect in a Dissipative Optomechanical Cavity Interacting with Photonic Crystal Reviewed

    Satoshi Tanaka, Kazuki Kanki

    Physics 雑誌   2 ( 1 )   34 - 48   2020.02

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    Kind of work:Joint Work  

  • The Dynamical Casimir Effect in a Dissipative Optomechanical Cavity Interacting with Photonic Crystal Reviewed

    Satoshi Tanaka, Kazuki Kanki

    Physics   2 ( 1 )   34 - 48   2020.02

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    Publishing type:Research paper (scientific journal)  

    We theoretically study the dynamical Casimir effect (DCE), i.e., parametric
    amplification of a quantum vacuum, in an optomechanical cavity interacting with
    a photonic crystal, which is considered to be an ideal system to study the
    microscopic dissipation effect on the DCE. Starting from a total Hamiltonian
    including the photonic band system as well as the optomechanical cavity, we
    have derived an effective Floquet-Liouvillian by applying the Floquet method
    and Brillouin-Wigner-Feshbach projection method. The microscopic dissipation
    effect is rigorously taken into account in terms of the energy-dependent
    self-energy. The obtained effective Floquet-Liouvillian exhibits the two
    competing instabilities, i.e., parametric and resonance instabilities, which
    determine the stationary mode as a result of the balance between them in the
    dissipative DCE. Solving the complex eigenvalue problem of the
    Floquet-Liouvillian, we have determined the stationary mode with vanishing
    values of the imaginary parts of the eigenvalues. We find a new non-local
    multimode DCE represented by a multimode Bogoliubov transformation of the
    cavity mode and the photon band. We show the practical advantage for the
    observation of DCE in that we can largely reduce the pump frequency when the
    cavity system is embedded in a narrow band photonic crystal with a bandgap.

    DOI: 10.3390/physics2010005

  • Fano absorption spectrum with the complex spectral analysis Reviewed

    Taku Fukuta, Savannah Garmon, Kazuki Kanki, Ken-ichi Noba, Satoshi Tanaka

    Physical Review A 雑誌   96 ( 5 )   2017.11

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    Kind of work:Joint Work  

  • Exact description of coalescing eigenstates in open quantum systems in terms of microscopic Hamiltonian dynamics Reviewed

    Kazuki Kanki, Savannah Garmon, Satoshi Tanaka, Tomio Petrosky

    Journal of Mathematical Physics 雑誌   58 ( 9 )   2017.09

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    Kind of work:Joint Work  

  • Microscopic description of irreversibility in quantum Lorentz gas by complex spectral analysis of the Liouvillian outside the Hilbert space Reviewed

    T. Petrosky, K. Hashimoto, K. Kanki, S. Tanaka

    Chaos 雑誌   27 ( 10 )   2017.09

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    Kind of work:Joint Work  

  • Higher-order time-symmetry-breaking phase transition due to meeting of an exceptional point and a Fano resonance Reviewed

    Satoshi Tanaka, Savannah Garmon, Kazuki Kanki, and Tomio Petrosky

    Physical Review A 雑誌   94 ( 2 )   2016.08

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    Kind of work:Joint Work  

  • On the effect of exceptional points in the Liouvillian dynamics of a 1D quantum Lorentz gas Reviewed

    Kazunari Hashimoto, Kazuki Kanki, Savannah Garmon, Satoshi Tanaka, and Tomio Petrosky

    Progress of Theoretical and Experimental Physics 雑誌   2016 ( 5 )   2016.05

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    Kind of work:Joint Work  

  • Spontaneous Breakdown of a PT-Symmetry in the Liouvillian Dynamics at a Non-Hermitian Degeneracy Point Reviewed

    Kazuki Kanki, Kazunari Hashimoto, Tomio Petrosky and Satoshi Tanaka

    Non-Hermitian Hamiltonians in Quantum Physics, Springer Proceedings in Physics 雑誌   184   289 - 304   2016.05

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    Kind of work:Joint Work  

  • Physical Aspect of Exceptional Point in the Liouvillian Dynamics for a Quantum Lorentz Gas Reviewed

    Kazunari Hashimoto, Kazuki Kanki, Satoshi Tanaka and Tomio Petrosky

    Non-Hermitian Hamiltonians in Quantum Physics, Springer Proceedings in Physics 雑誌   184   263 - 279   2016.05

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    Kind of work:Joint Work  

  • Microscopic description of quantum Lorentz gas and extension of the Boltzmann equation to entire space-time scale Reviewed

    K. Hashimoto, K. Kanki, S. Tanaka, and T. Petrosky

    Physical Review E 雑誌   93 ( 2 )   2016.02

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    Kind of work:Joint Work  

  • Non-divergent representation of a non-Hermitian operator near the exceptional point with application to a quantum Lorentz gas Reviewed

    Kazunari Hashimoto, Kazuki Kanki, Hisao Hayakawa, Tomio Petrosky

    Progress of Theoretical and Experimental Physics 雑誌 日本物理学会   Vol. 2015   2015.02

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    Kind of work:Joint Work  

  • Nonequilibrium transport on a quantum molecular chain in terms of the complex Liouvillian spectrum Reviewed

    Satoshi Tanaka, Kazuki Kanki, and Tomio Petrosky

    PHYSICAL REVIEW E 雑誌 American Physical Society   83 ( 5 )   051118 - 1   2011.05

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    Kind of work:Joint Work  

  • Band structure and accumulation point in the spectrum of quantum collision operator in a one-dimensional molecular chain Reviewed

    B. A. Tay, Kazuki Kanki, Satoshi Tanaka, and Tomio Petrosky

    JOURNAL OF MATHEMATICAL PHYSICS 雑誌 American Institute of Physics   52   023302 - 1   2011.02

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    Kind of work:Joint Work  

  • Hofstadter’s Butterfly Type of Singular Spectrum of a Collision Operator for a Model of Molecular Chains Reviewed

    Tomio Petrosky, Naomichi Hatano, Kazuki Kanki, and Satoshi Tanaka

    Progress of Theoretical Physics Supplement 雑誌 The Yukawa Institute for Theoretical Physics and the Physical Society of Japan   184   457 - 465   2010

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    Kind of work:Joint Work  

  • Accumulation Point in the Spectrum of the Collision Operator for a One-Dimensional Polaron System Reviewed

    Kazuki Kanki, Satoshi Tanaka, Buang Ann Tay, and Tomio Petrosky

    Progress of Theoretical Physics Supplement 雑誌 The Yukawa Institute for Theoretical Physics and the Physical Society of Japan   184   523 - 532   2010

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    Kind of work:Joint Work  

  • Emergence of quantum hydrodynamic sound mode of a quantum Brownian particle in a one-dimensional molecular chain Reviewed

    S.Tanaka, K.Kanki, T.Petrosky

    PHYSICAL REVIEW B The American Physical Society   80 ( 09 )   094304 - 1   2009.09

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    Kind of work:Joint Work  

  • Quantum hydrodynamic modes in one-dimensional polaron system Reviewed

    S.Tanaka, K.Kanki, T.Petrosky

    Journal of Luminescence 雑誌   128 ( 5-6 )   978 - 981   2008.05

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    Kind of work:Joint Work  

  • Microcanonical Simulation on the First Order Phase Transition of the XY Antiferromagnet on the Stacked Triangular Lattice Reviewed

    K.Kanki, D.Loison, K.D.Schotte

    Journal of the Physical Society of Japan 雑誌 日本物理学会   75 ( 1 )   2006.01

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    Kind of work:Joint Work  

  • Efficiency of the microcanonical over-relaxation algorithm for vector spins analyzing first and second order transitions Reviewed

    K. Kanki, D. Loison, K.D. Schotte

    The European Physical Journal B 雑誌 EDP Sciences   44 ( 3 )   309 - 315   2005.04

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    Kind of work:Joint Work  

  • Hall effect in high-Tc superconductors Reviewed

    H. Kontani, K. Kanki, K. Ueda

    Journal of Physics and Chemistry of Solids 雑誌   62 ( 1-2 )   83 - 87   2001.01

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    Kind of work:Joint Work  

  • Anomalous behaviors of the transport phenomena in high-Tc superconductors Reviewed

    Hiroshi Kontani, Kazuki Kanki, Kazuo Ueda

    Physica B 雑誌   281-282   808 - 809   2000.06

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    Kind of work:Joint Work  

  • Hall effect and resistivity in high-T_c superconductors: The conserving approximation Reviewed

    H. Konatni, K.Kanki

    Phys. Rev. B 雑誌   Vol. 59 ( No. 22 )   14723 - 14739   1999.06

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    Kind of work:Joint Work  

  • Theory of Hall Effec and Electrical Transport in High-T_c Cuprates: Effects of Antiferromagnetic Spin Fluctuations Reviewed

    K. Kanki, H. Kontani

    J. Phys. Soc. Jpn. 雑誌   Vol. 68 ( No. 5 )   1614 - 1624   1999.05

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    Kind of work:Joint Work  

  • Theory of Cyclotron Resonance in Interacting Electron Systems on the Basis of the Fermi Liquid Theory Reviewed

    K. Kanki, K. Yamada

    J.Phys.Soc.Jpn. 雑誌   Vol.66 ( No. 4 )   1103 - 1108   1997.04

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    Kind of work:Joint Work  

  • Electron-Phonon Interaction and Superconductivity in Heavy Electron Systems Reviewed

    K. Kanki, K. Yamada

    J. Phys. Soc. Jpn. 雑誌   Vol. 62 ( No. 11 )   4031 - 4043   1993.11

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    Kind of work:Joint Work  

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MISC

  • 外場駆動された双極子振動子からの動的カシミール光子放出

    田中智, 神吉一樹, 山根秀勝

    日本物理学会講演概要集(CD-ROM)   74 ( 1 )   2019( ISSN:2189-079X

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Presentations

  • 動的カシミール効果における複素スペクトル構造と2光子放射過程 Domestic conference

    神吉一樹, 武友輝, 田中智

    日本物理学会2023年春季大会  2023.03  日本物理学会

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    Presentation type:Oral presentation (general)  

    Venue:オンライン  

  • 動的カシミール効果による光子の生成と放射の理論 Domestic conference

    神吉一樹, 田中智

    第33回光物性研究会  2022.12 

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    Presentation type:Poster presentation  

    Venue:大阪大学  

  • パラメトリック振動子からの光子放出の理論 Domestic conference

    武友輝,神吉一樹,田中智

    第33回光物性研究会  2022.12 

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    Presentation type:Poster presentation  

    Venue:大阪大学  

  • 複素固有モード解析による共振器・フォトニックバンド結合系の動的カシミール効果における非平衡定常状態 International coauthorship Domestic conference

    田中智, 神吉一樹, トミオ・ペトロスキー

    日本物理学会2022年秋季大会  2022.09  日本物理学会

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    Presentation type:Oral presentation (general)  

    Venue:東京工業大学  

  • 周期駆動された量子調和振動子系における動的不変量の固有状態としての複素フロケ状態 Domestic conference

    神吉一樹, 田中智

    日本物理学会2021年秋季大会  2021.09  日本物理学会

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    Presentation type:Poster presentation  

  • 円筒導波路中の分子双極子の光渦自発発光の理論 Domestic conference

    田中智, 神吉一樹, 後藤勇樹, 久保伸, トミオ・ペトロスキー

    日本物理学会2021年秋季大会  2021.09  日本物理学会

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    Presentation type:Poster presentation  

  • スピン軌道相互作用を有する1次元分子鎖の局所磁場による例外点多様体の変化 Domestic conference

    ダンハム優仁, Gonzalo Ordonez, Savannah Garmon, 神吉一樹, 田中智

    日本物理学会第76回年次大会(2021年)  2021.03 

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    Presentation type:Poster presentation  

  • 現象論的拡散係数が負になり得る一次元量子系におけるH定理の証明 Domestic conference

    中出捷, 神吉一樹, トミオ・ペトロスキー

    日本物理学会第76回年次大会(2021年)  2021.03 

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    Presentation type:Poster presentation  

  • ポリアセチレンの電荷移動散逸過程における単一電子スピン磁気共鳴異常 Domestic conference

    田中智, ダンハム優仁, 神吉一樹, Savannah Garmon, Gonzalo Ordonez

    日本物理学会第76回年次大会(2021年)  2021.03 

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    Presentation type:Poster presentation  

  • ハミルトン力学のシンプレクティック性に由来する量子系の非エルミート性 Domestic conference

    神吉一樹, 田中智

    日本物理学会2020年秋季大会  2020.09 

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    Presentation type:Poster presentation  

  • 一次元ポーラロン伝播における異常拡散と見かけ上の負の拡散係数 Domestic conference

    中出捷, 神吉一樹, 田中智, トミオ・ペトロスキー

    日本物理学会2020年秋季大会  2020.09 

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    Presentation type:Poster presentation  

  • シンプレクティック・フロケー・リウビリアンの複素スペクトル解析による散逸的動的カシミール効果の理論 Domestic conference

    田中智, 神吉一樹

    日本物理学会2020年秋季大会  2020.09 

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    Presentation type:Poster presentation  

  • パラメトリック不安定系の複素固有モードと複素固有状態 Domestic conference

    神吉一樹, 田中智

    日本物理学会第75回年次大会(2020年)  2020.03 

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    Presentation type:Poster presentation  

  • リウビル演算子の固有値・固有状態に基づく一次元ポーラロン伝播の輸送係数の解析 Domestic conference

    中出捷, 神吉一樹, 田中智, トミオ・ペトロスキー

    日本物理学会第75回年次大会(2020年)  2020.03 

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    Presentation type:Poster presentation  

  • フォトニック結晶と結合するオプトメカニカル共振器の動的カシミール効果 Domestic conference

    田中智, 神吉一樹

    日本物理学会第75回年次大会(2020年)  2020.03 

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    Presentation type:Poster presentation  

  • Non-Hermitian Liouvillian dynamics in an unstable bosonic system with quadratic Hermitian Hamiltonian International conference

    Kazuki Kanki

    Workshop on Non-Hermitian Quantum Mechanics in IIS-Chiba (NH2019TD)  2019.11 

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    Presentation type:Poster presentation  

  • Davydov量子分子鎖モデルに現れる異常拡散 Domestic conference

    中出捷, 神吉一樹, 田中智, トミオ・ペトロスキー

    日本物理学会2019年秋季大会  2019.09 

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    Presentation type:Poster presentation  

  • 1次元量子ローレンツ気体のリウビリアンの複素固有値問題再考 Domestic conference

    神吉一樹, Tomio Petrosky

    日本物理学会2019年秋季大会  2019.09 

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    Presentation type:Poster presentation  

  • フロケーリウビリアン複素スペクトル解析による量子真空パラメトリック増幅の微視的理論 Domestic conference

    田中智, 神吉一樹

    日本物理学会2019年秋季大会  2019.09 

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    Presentation type:Poster presentation  

  • Microscopic description of irreversibility in 1D quantum Lorentz gas by complex spectral analysis of the Liouville-von Neumann operator Invited International conference

    Kazuki Kanki

    Workshop on Non-Hermitian Quantum Mechanics in IIS-Chiba (NH2019)  2019.08 

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    Presentation type:Poster presentation  

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Charge of on-campus class subject

  • 社会に活きる科学

    2022   Weekly class   Undergraduate

  • 物理学特別研究3A

    2022   Intensive lecture   Graduate school

  • 物理学特別演習3A

    2022   Intensive lecture   Graduate school

  • 物性理論1

    2022   Weekly class   Graduate school

  • 物理学特別研究1A

    2022   Intensive lecture   Graduate school

  • 物理学特別演習1A

    2022   Intensive lecture   Graduate school

  • 海外特別研究3 (中百舌鳥)

    2022   Intensive lecture   Graduate school

  • 物理学特別研究3B (中百舌鳥)

    2022   Intensive lecture   Graduate school

  • 物理学特別演習3B (中百舌鳥)

    2022   Intensive lecture   Graduate school

  • 海外特別研究5 (中百舌鳥)

    2022   Intensive lecture   Graduate school

  • 海外特別研究4 (中百舌鳥)

    2022   Intensive lecture   Graduate school

  • 海外特別研究2 (中百舌鳥)

    2022   Intensive lecture   Graduate school

  • 海外特別研究1 (中百舌鳥)

    2022   Intensive lecture   Graduate school

  • 物理学特別研究1B (中百舌鳥)

    2022   Intensive lecture   Graduate school

  • 物理学特別演習1B (中百舌鳥)

    2022   Intensive lecture   Graduate school

  • 科学英語(物理)

    2022   Intensive lecture   Undergraduate

  • 統計物理学II

    2022   Weekly class   Undergraduate

  • 統計物理学演習II

    2022   Weekly class   Undergraduate

  • Introduction to Life, Environment, and Advanced Sciences

    2021    

  • Sciences in Community

    2021    

  • Statistical Mechanics II

    2021    

  • Exercise: Statistical Mechanics II

    2021    

  • Theory of Condensed Matter I

    2021    

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