Okuyama Kazumi

Academic Assembly School of Science and Technology Institute of Science

Faculty of Science Department of Science Course of Physics 

Professor 

Degree

  • 理学博士, University of Tokyo

Research Keyword

    String Theory

Field Of Study

  • Experimental studies related to particle-, nuclear-, cosmic ray and astro-physics, Particle/Nuclear/Cosmic ray/Astro physics

TEL

    +81-263-2461

Mail Address

    kazumi★azusa.shinshu-u.ac.jp

Career

  • 2021
    Professor, Shinshu University
  • 2018 - 2020
    東京大学 客員准教授
  • 2012 - 2021
    Associate Professor, Shinshu University
  • 2007 - 2012
    Assistant Professor, Shinshu University
  • 2006 - 2007
    Assistant, Shinshu University

Educational Background

  • 2010 - 2010, Niels Bohr Institute
  • 2004 - 2006, University of British Columbia
  • 2001 - 2004, University of Chicago
  • 1994 - 1999, University of Tokyo, 理学系研究科, 物理学専攻
  • 1990 - 1994, University of Tokyo, 理学部, 物理学科

Award

  • 2008
    素粒子論グループ, 素粒子メダル奨励賞

Paper

  • More on doubled Hilbert space in double-scaled SYK
    Kazumi Okuyama
    Physics Letters B, 138858, 09 Jul. 2024, Refereed, Not invited
    Lead電子ジャーナル
  • Solvable limit of ETH matrix model for double-scaled SYK
    Kazumi Okuyama, Takao Suyama
    Journal of High Energy Physics, 2024(04), 094, 17 Apr. 2024, Refereed, Not invited
    Lead, Last, Corresponding電子ジャーナル
  • Doubled Hilbert space in double-scaled SYK
    Kazumi Okuyama
    Journal of High Energy Physics, 2024(04), 091, 17 Apr. 2024, Refereed, Not invited
    Lead電子ジャーナル
  • Negativity and its capacity in JT gravity
    Kazumi Okuyama, Takeshi Tachibana
    Journal of High Energy Physics, 2024(02), 183, 23 Feb. 2024, Refereed, Not invited電子ジャーナル
  • Matter correlators through a wormhole in double-scaled SYK
    Kazumi Okuyama
    Journal of High Energy Physics, 2024(02), 147, 21 Feb. 2024, Refereed, Not invited
    Lead, Last, Corresponding電子ジャーナル
  • Discrete analogue of the Weil-Petersson volume in double scaled SYK
    Kazumi Okuyama
    Journal of High Energy Physics, 2023(09), 133, 20 Sep. 2023, Refereed, Not invited
    Lead電子ジャーナル
  • End of the world brane in double scaled SYK
    Kazumi Okuyama
    Journal of High Energy Physics, 2023(08), 053, 11 Aug. 2023, Refereed, Not invited
    Lead, Last, Corresponding電子ジャーナル
  • Late time behavior of n-point spectral form factors in Airy and JT gravities
    Takanori Anegawa, Norihiro Iizuka, Kazumi Okuyama, Kazuhiro Sakai
    Journal of High Energy Physics, 2023(07), 047, 06 Jul. 2023, Refereed, Not invited電子ジャーナル
  • High temperature expansion of double scaled SYK
    Kazumi Okuyama
    Physics Letters B, 843, 138036, 20 Jun. 2023, Refereed, Not invited
    Lead, Last, Corresponding電子ジャーナル
  • Correlators of double scaled SYK at one-loop
    Kazumi Okuyama, Kenta Suzuki
    Journal of High Energy Physics, 2023(05), 117, 15 May 2023, Refereed, Not invited電子ジャーナル
  • Spectral form factor in the τ-scaling limit
    Kazumi Okuyama, Kazuhiro Sakai
    Journal of High Energy Physics, 2023(04), 123, 26 Apr. 2023, Refereed, Not invited電子ジャーナル
  • Hartle-Hawking wavefunction in double scaled SYK
    Kazumi Okuyama
    Journal of High Energy Physics, 2023(03), 152, 21 Mar. 2023, Refereed, Not invited
    Lead, Last, Corresponding電子ジャーナル
  • Large N expansion of an integrated correlator in N=4 SYM
    Yasuyuki Hatsuda, Kazumi Okuyama
    Journal of High Energy Physics, 2022(11), 086, 15 Nov. 2022, Refereed, Not invited電子ジャーナル
  • 't Hooft expansion of SO(N) and Sp(N) N=4 SYM revisited
    Kazumi Okuyama
    Journal of High Energy Physics, 2022(09), 064, 08 Sep. 2022, Refereed, Not invited
    Lead, Last, Corresponding電子ジャーナル
  • Page curve from dynamical branes in JT gravity
    Kazumi Okuyama, Kazuhiro Sakai
    Journal of High Energy Physics, 2022(02), 087, 11 Feb. 2022, Refereed, Not invited電子ジャーナル
  • A proof of loop equations in 2d topological gravity
    Kazumi Okuyama, Kazuhiro Sakai
    Journal of High Energy Physics, 2021(10), 107, 14 Oct. 2021, Refereed, Not invited電子ジャーナル
  • FZZT branes in JT gravity and topological gravity
    Kazumi Okuyama, Kazuhiro Sakai
    Journal of High Energy Physics, 2021(09), 191, 28 Sep. 2021, Refereed, Not invited電子ジャーナル
  • Capacity of entanglement in random pure state
    Kazumi Okuyama
    Physics Letters B, 820, 136600, 24 Aug. 2021, Refereed, Not invited
    Lead電子ジャーナル
  • 't Hooft expansion of multi-boundary correlators in 2D topological gravity
    Kazumi Okuyama, Kazuhiro Sakai
    Progress of Theoretical and Experimental Physics, 2021(8), 083B03, 14 Jul. 2021, Refereed, Not invited電子ジャーナル
  • Genus expansion of open free energy in 2d topological gravity
    Kazumi Okuyama, Kazuhiro Sakai
    Journal of High Energy Physics, 2021(03), 217, 23 Mar. 2021, Refereed電子ジャーナル
  • Quenched free energy from spacetime D-branes
    Kazumi Okuyama
    Journal of High Energy Physics, 2021(03), 073, 05 Mar. 2021, Refereed電子ジャーナル
  • Quenched free energy in random matrix model
    Kazumi Okuyama
    Journal of High Energy Physics, 2020(12), 080, 11 Dec. 2020, Refereed電子ジャーナル
  • JT supergravity and Brezin-Gross-Witten tau-function
    Kazumi Okuyama, Kazuhiro Sakai
    Journal of High Energy Physics, 2020(10), 160, 26 Oct. 2020, Refereed電子ジャーナル
  • Multi-boundary correlators in JT gravity
    Kazumi Okuyama, Kazuhiro Sakai
    Journal of High Energy Physics, 2020(08), 126, 25 Aug. 2020, Refereed電子ジャーナル
  • Replica symmetry breaking in random matrix model: a toy model of wormhole networks
    Kazumi Okuyama
    Physics Letters B, 803, 135280, 07 Feb. 2020, Refereed電子ジャーナル
  • JT gravity, KdV equations and macroscopic loop operators
    Kazumi Okuyama, Kazuhiro Sakai
    Journal of High Energy Physics, 2020(01), 156, 24 Jan. 2020, Refereed電子ジャーナル
  • Holomorphic anomaly of 2d Yang-Mills theory on a torus revisited
    Kazumi Okuyama, Kazuhiro Sakai
    Journal of High Energy Physics, 2019(08), 025, 06 Aug. 2019, Refereed電子ジャーナル
  • Eigenvalue instantons in the spectral form factor of random matrix model
    Kazumi Okuyama
    Journal of High Energy Physics, 2019(03), 147, 25 Mar. 2019, RefereedWebofScienceリポジトリ電子ジャーナル
  • Spectral form factor and semi-circle law in the time direction
    Kazumi Okuyama
    Journal of High Energy Physics, 2019(02), 161, 25 Feb. 2019, RefereedWebofScienceリポジトリ電子ジャーナル
  • Connected correlator of 1/2 BPS Wilson loops in N=4 SYM
    Kazumi Okuyama
    Journal of High Energy Physics, 2018(10), 037, 05 Oct. 2018, RefereedWebofScienceリポジトリ電子ジャーナル
  • Resurgence analysis of 2d Yang-Mills theory on a torus
    Kazumi Okuyama, Kazuhiro Sakai
    Journal of High Energy Physics, 2018(08), 065, 13 Aug. 2018, RefereedWebofScienceリポジトリ電子ジャーナル
  • Phase diagram of q-deformed Yang-Mills theory on S^2 at non-zero theta-angle
    Kazumi Okuyama
    Journal of High Energy Physics, 2018(04), 059, 11 Apr. 2018, RefereedWebofScienceリポジトリ電子ジャーナル
  • Phase transition of anti-symmetric Wilson loops in N=4 SYM
    Kazumi Okuyama
    Journal of High Energy Physics, 2017(12), 125, 21 Dec. 2017, RefereedWebofScienceリポジトリ電子ジャーナル
  • Wilson loops in unitary matrix models at finite N
    Kazumi Okuyama
    Journal of High Energy Physics, 2017(07), 030, 07 Jul. 2017, RefereedWebofScienceリポジトリ電子ジャーナル
  • Wilson loops in 3d N= 4 SQCD from Fermi gas
    Kazumi Okuyama
    Journal of High Energy Physics, 2016(11), 156, 25 Nov. 2016, RefereedWebofScienceリポジトリ電子ジャーナル
  • α′-expansion of antisymmetric Wilson loops in N=4 SYM from Fermi gas
    Masaatsu Horikoshi, Kazumi Okuyama
    Progress of Theoretical and Experimental Physics, 2016(11), 113B05, 16 Nov. 2016, RefereedWebofScienceリポジトリ電子ジャーナル
  • Exact results for ABJ Wilson loops and open-closed duality
    Yasuyuki Hatsuda, Kazumi Okuyama
    Journal of High Energy Physics, 2016(10), 132, 24 Oct. 2016, Refereed電子ジャーナル
  • Instanton corrections of 1/6 BPS Wilson loops in ABJM theory
    Kazumi Okuyama
    Journal of High Energy Physics, 2016(09), 125, 20 Sep. 2016, RefereedWebofScienceリポジトリ電子ジャーナル
  • ABJ theory in the higher spin limit
    Shinji Hirano, Masazumi Honda, Kazumi Okuyama, Masaki Shigemori
    Journal of High Energy Physics, 08, 174, 31 Aug. 2016, Refereed電子ジャーナル
  • Numerical analysis of Coleman–de Luccia tunneling
    Yuhei Goto, Kazumi Okuyama
    International Journal of Modern Physics A, 31(24), 1650131, 30 Aug. 2016, Refereed電子ジャーナル
  • TBA-like integral equations from quantized mirror curves
    Kazumi Okuyama, Szabolcs Zakany
    Journal of High Energy Physics, 2016(03), 101, 15 Mar. 2016, Refereed電子ジャーナル
  • Orientifolding of the ABJ Fermi gas
    Kazumi Okuyama
    Journal of High Energy Physics, 2016(03), 008, 02 Mar. 2016, Refereed電子ジャーナル
  • Probing non-perturbative effects in M-theory on orientifolds
    Kazumi Okuyama
    Journal of High Energy Physics, 2016(01), 054, 11 Jan. 2016, Refereed電子ジャーナル
  • Exact instanton expansion of the ABJM partition function
    Yasuyuki Hatsuda, Sanefumi Moriyama, Kazumi Okuyama
    Progress of Theoretical and Experimental Physics, 2015(11), 104, 28 Oct. 2015, Refereed電子ジャーナル
  • Large N non-perturbative effects in N=4 superconformal Chern-Simons theories
    Yasuyuki Hatsuda, Masazumi Honda, Kazumi Okuyama
    Journal of High Energy Physics, 1509, 046, 09 Sep. 2015, RefereedWebofScienceリポジトリ電子ジャーナル
  • Resummations and Non-Perturbative Corrections
    Yasuyuki Hatsuda, Kazumi Okuyama
    Journal of High Energy Physics, 1509, 051, 09 Sep. 2015, RefereedWebofScienceリポジトリ電子ジャーナル
  • Probing non-perturbative effects in M-theory
    Yasuyuki Hatsuda, Kazumi Okuyama
    Journal of High Energy Physics, 1410, 158, 27 Oct. 2014, RefereedWebofScienceリポジトリ電子ジャーナル
  • Non-perturbative effects and the refined topological string
    Yasuyuki Hatsuda, Marcos Marino, Sanefumi Moriyama, Kazumi Okuyama
    Journal of High Energy Physics, 2014(9), 168, 29 Sep. 2014, RefereedWebofScienceリポジトリ電子ジャーナル
  • Exact results on ABJ theory and the refined topological string
    Masazumi Honda, Kazumi Okuyama
    Journal of High Energy Physics, 2014(8), 148, 26 Aug. 2014, RefereedWebofScienceリポジトリ電子ジャーナル
  • ABJM Wilson Loops in Arbitrary Representations
    Yasuyuki Hatsuda, Masazumi Honda, Sanefumi Moriyama, Kazumi Okuyama
    Journal of High Energy Physics, 2013(10), 168, 24 Oct. 2013, RefereedWebofScienceリポジトリ電子ジャーナル
  • Instanton bound states in ABJM theory
    Yasuyuki Hatsuda, Sanefumi Moriyama, Kazumi Okuyama
    Journal of High Energy Physics, 2013(5), 054, 13 May 2013, RefereedWebofScienceリポジトリ電子ジャーナル
  • Instanton effects in ABJM theory from Fermi gas approach
    Yasuyuki Hatsuda, Sanefumi Moriyama, Kazumi Okuyama
    Journal of High Energy Physics, 2013(1), 158, 24 Jan. 2013, RefereedWebofScienceリポジトリ電子ジャーナル
  • Exact results on the ABJM Fermi gas
    Yasuyuki Hatsuda, Sanefumi Moriyama, Kazumi Okuyama
    Journal of High Energy Physics, 2012(10), 020, 02 Oct. 2012, RefereedWebofScienceリポジトリ電子ジャーナル
  • A Note on the Partition Function of ABJM Theory on S3
    Kazumi Okuyama
    Progress of Theoretical Physics, 127(2), 229-242, 2012, RefereedWebofScienceリポジトリ電子ジャーナル
  • Gauge-Higgs unification in spontaneously created fuzzy extra dimensions
    Kazuyuki Furuuchi, Takeo Inami, Kazumi Okuyama
    Journal of High Energy Physics, 2011(11), 006, Nov. 2011, RefereedWebofScienceリポジトリ電子ジャーナル
  • D-branes Wrapped on Fuzzy del Pezzo Surfaces
    Kazuyuki Furuuchi, Kazumi Okuyama
    Journal of High Energy Physics, 1101, 043, 2011, Refereed電子ジャーナル
  • Global AdS Picture of 1/2 BPS Wilson Loops
    Kazumi Okuyama
    Journal of High Energy Physics, 1001, 096, 2010, RefereedWebofScienceリポジトリ電子ジャーナル
  • q-Deformed Oscillators and D-branes on Conifold
    Kazumi Okuyama
    Physics Letters B, 673, 232-236, 2009, RefereedWebofScienceリポジトリ電子ジャーナル
  • Instanton Solution in Tachyon Cosmology
    Kazumi Okuyama
    Physics Letters B, 658, 241-243, 2008, Refereed電子ジャーナル
  • N=4 SYM on K3 and the AdS(3)/CFT(2) Correspondence
    Kazumi Okuyama
    Journal of High Energy Physics, 0802, 036, 2008, Refereed電子ジャーナル
  • Linear Sigma Models for the R^8/Z_k Orbifold
    Kazumi Okuyama
    Physics Letters B, 668, 153-158, 2008, Refereed電子ジャーナル
  • D-Brane Amplitudes in Topological String on Conifold
    KazumiOkuyama
    Physics Letters B, 645, 275-280, 2007, Refereed電子ジャーナル
  • 1/2 BPS Correlator and Free Fermion
    Kazumi Okuyama
    Journal of High Energy Physics, 0601, 021, 2006, Refereed電子ジャーナル
  • Hairpin Branes and D-Branes Behind the Horizon
    Kazumi Okuyama, Moshe Rozali
    Journal of High Energy Physics, 0603, 071, 2006, Refereed電子ジャーナル
  • Wilson Loops in N=4 SYM and Fermion Droplets
    Kazumi Okuyama, Gordon W. Semenoff
    Journal of High Energy Physics, 0606, 057, 2006, Refereed電子ジャーナル
  • t Hooft Expansion of 1/2 BPS Wilson Loop
    Kazumi Okuyama
    JournalofHigh Energy Physics, 0609, 007, 2006, Refereed電子ジャーナル
  • Annulus Amplitudes in the Minimal Superstring
    Kazumi Okuyama
    Journal of High Energy Physics, 0504, 002, 2005, Refereed電子ジャーナル
  • Linear Sigma Models of H and KK Monopoles
    Kazumi Okuyama
    Journal of High Energy Physics, 0508, 089, 2005, Refereed電子ジャーナル
  • D1-D5 on ALE Space
    Kazumi Okuyama
    Journal of High Energy Physics, 0512, 042, 2005, Refereed電子ジャーナル
  • Three-Point Functions in N=4 SYM Theory at One-Loop
    Kazumi Okuyama, Li-Sheng Tseng
    Journal of High Energy Physics, 0408, 055, 2004, Refereed電子ジャーナル
  • Annulus Amplitudes and ZZ Branes in Minimal String Theory
    David Kutasov, Kazumi Okuyama, Jongwon Park, Nathan Seiberg, David Shih
    Journal of High Energy Physics, 0408, 026, 2004, Refereed電子ジャーナル
  • Scattered Results in 2D String Theory
    Emil Martinec, Kazumi Okuyama
    Journal of High Energy Physics, 0410, 065, 2004, Refereed電子ジャーナル
  • D-Branes on the Null-Brane
    Kazumi Okuyama
    Journal of High Energy Physics, 0302, 043, 2003, Refereed電子ジャーナル
  • Wess-Zumino Term in Tachyon Effective Action
    Kazumi Okuyama
    Journal of High Energy Physics, 0305, 005, 2003, Refereed電子ジャーナル
  • Comments on Half S-Branes
    Kazumi Okuyama
    Journal of High Energy Physics, 0309, 053, 2003, Refereed電子ジャーナル
  • Siegel Gauge in Vacuum String Field Theory
    Kazumi Okuyama
    Journal of High Energy Physics, 0201, 043, 2002, Refereed電子ジャーナル
  • Ghost Kinetic Operator of Vacuum String Field Theory
    Kazumi Okuyama
    Journal of High Energy Physics, 0201, 027, 2002, Refereed電子ジャーナル
  • Ratio of Tensions from Vacuum String Field Theory
    Kazumi Okuyama
    Journal of High Energy Physics, 0203, 050, 2002, Refereed電子ジャーナル
  • PP-Waves and Holography
    Robert G. Leigh, Kazumi Okuyama, Moshe Rozali
    Physical Review D, 66, 46004, 2002, Refereed電子ジャーナル
  • N=4 SYMon R times S^3 and PP-Wave
    Kazumi Okuyama
    Journal of High Energy Physics, 0211, 043, 2002, Refereed電子ジャーナル
  • Free Field Appoach to StringTheoryon AdS_3
    Kazuo Hosomichi,Kazumi Okuyama, Yuji Satoh
    Nuclear Physics B, 598, 451-466, 2001, Refereed電子ジャーナル
  • Boundary States in B-Field Background
    Kazumi Okuyama
    PhysicsLetters B, 499, 305-314, 2001, Refereed電子ジャーナル
  • Noncommutative Tachyon from Background Independent Open String Field Theory
    Kazumi Okuyama
    Physics Letters B, 499, 167-173, 2001, Refereed電子ジャーナル
  • Comments on Open Wilson Lines and Generalized Star Products
    Kazumi Okuyama
    Physics Letters B, 506, 377-384, 2001, Refereed電子ジャーナル
  • Open string fields as matrices
    Kazumi Okuyama
    AIP Conf. Proc., 607, 202-208, 2001, Invited電子ジャーナル
  • Open string fields as matrices
    Teruhiko Kawano, Kazumi Okuyama
    Journal of High Energy Physics, 0106, 061, 2001, Refereed電子ジャーナル
  • Comma Vertex and String Field Algebra
    Kazuyuki Furuuchi, Kazumi Okuyama
    Journal of High EnergyPhysics, 0109, 035, 2001, Refereed電子ジャーナル
  • Spinor Exchange in AdS_{d+1}
    Teruhiko Kawano, Kazumi Okuyama
    Nuclear Physics B, 565, 427-444, 2000, Refereed電子ジャーナル
  • A Path Integral Representation of the Map between Commutative and Noncommutative Gauge Fields
    Kazumi Okuyama
    Journal of High Energy Physics, 0003, 016, 2000, Refereed電子ジャーナル
  • Path Integral Approach to String Theory on AdS_3
    Nobuyuki Ishibashi, Kazumi Okuyama, Yuji Satoh
    Nuclear Physics B, 588, 149-177, 2000, Refereed電子ジャーナル
  • BRST gauge fixing and the algebra of global supersymmetry
    Kazuo Fujikawa, Kazumi Okuyama
    Nuclear Physics B, 521, 401-415, 1998, Refereed電子ジャーナル
  • SO(9,1) invariant matrix formulation of supermembrane
    Kazuo Fujikawa, Kazumi Okuyama
    NuclearPhysics B, 510, 175-198, 1998, Refereed電子ジャーナル
  • BPS Condition of String Junction from M theory
    Yutaka Matsuo, Kazumi Okuyama
    Physics Letters B, 426, 294-296, 1998, Refereed電子ジャーナル
  • Matrix Theory on Noncommutative Torus
    Teruhiko Kawano, Kazumi Okuyama
    Physics Letters B, 433, 29-34, 1998, Refereed電子ジャーナル
  • String Network and 1/4 BPS States in N=4 SU(n) Supersymmetric Yang-Mills Theory
    Teruhiko Kawano, Kazumi Okuyama
    Physics Letters B, 432, 338-342, 1998, Refereed電子ジャーナル
  • Fractional Strings in (p,q) 5-brane and Quiver Matrix String Theory
    Kazumi Okuyama, Yuji Sugawara
    Journal of High Energy Physics, 9808, 002, 1998, Refereed電子ジャーナル
  • On a Lorentz covariant matrix regularization of membrane theories
    Kazuo Fujikawa, Kazumi Okuyama
    Physics Letters B, 411, 261-267, 1997, Refereed電子ジャーナル

Affiliated academic society

  • 日本物理学会

Research Themes

  • JT重力の行列模型から探る量子重力の非摂動効果
    科学研究費補助金, 基盤研究(C)
    01 Apr. 2022 - 31 Mar. 2025
  • 量子情報を用いた量子宇宙の基礎理論
    科学研究費補助金, 京都大学, 学術変革領域研究(A)
    10 Sep. 2021 - 31 Mar. 2026
  • ゲージ理論の厳密な結果から探る量子的な時空の構造
    科学研究費補助金, 基盤研究(C)
    01 Apr. 2019 - 31 Mar. 2022
  • M理論の非摂動効果とフェルミ気体
    科学研究費補助金, 基盤研究(C)
    01 Apr. 2016 - 31 Mar. 2019
  • 超弦理論における量子的な時空の幾何学
    科学研究費補助金, 若手研究(B)
    28 Apr. 2011 - 31 Mar. 2015
  • 超弦理論における時空の出現
    科学研究費補助金, 若手研究(B)
    01 Apr. 2007 - 31 Mar. 2010