Academic Organization | Academic Assembly School of Science and Technology Institute of Science | TEL | +81-263-2461 | |
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Education and Research Organization | Faculty of Science Department of Science | FAX | +81-263-2559 | |

Position | Professor | Mail Address | kazumi＠azusa.shinshu-u.ac.jp | |

Address | 3-1-1 Asahi Matsumoto, Nagano 390-8621 | Web site | http://azusa.shinshu-u.ac.jp/~kazumi |

- Academic Background
**Graduate School**

University of Tokyo , 1999**College**

University of Tokyo , 1994**Degree**

University of Tokyo

- Research Career
**Research Career**

2021- , Professor, Shinshu University

2018-2020

2012-2021 , Associate Professor, Shinshu University

2007-2012 , Assistant Professor, Shinshu University

2006-2007 , Assistant, Shinshu University**Overseas Education**

2010-2010 , Niels Bohr Institute

2004-2006 , University of British Columbia

2001-2004 , University of Chicago

- Books, Articles, etc.
**Articles**

A proof of loop equations in 2d topological gravity

Journal of High Energy Physics,2021(10):107 2021(Oct. 14)

Author:Kazumi Okuyama, Kazuhiro Sakai

FZZT branes in JT gravity and topological gravity

Journal of High Energy Physics,2021(09):191 2021(Sep. 28)

Author:Kazumi Okuyama, Kazuhiro Sakai

Capacity of entanglement in random pure state

Physics Letters B,820:136600 2021(Aug. 24)

Author:Kazumi Okuyama

't Hooft expansion of multi-boundary correlators in 2D topological gravity

Progress of Theoretical and Experimental Physics,2021(8):083B03 2021(Jul. 14)

Author:Kazumi Okuyama, Kazuhiro Sakai

Genus expansion of open free energy in 2d topological gravity

Journal of High Energy Physics,2021(03):217 2021(Mar. 23)

Author:Kazumi Okuyama, Kazuhiro Sakai

Quenched free energy from spacetime D-branes

Journal of High Energy Physics,2021(03):073 2021(Mar. 05)

Author:Kazumi Okuyama

Quenched free energy in random matrix model

Journal of High Energy Physics,2020(12):080 2020(Dec. 11)

Author:Kazumi Okuyama

JT supergravity and Brezin-Gross-Witten tau-function

Journal of High Energy Physics,2020(10):160 2020(Oct. 26)

Author:Kazumi Okuyama, Kazuhiro Sakai

Multi-boundary correlators in JT gravity

Journal of High Energy Physics,2020(08):126 2020(Aug. 25)

Author:Kazumi Okuyama, Kazuhiro Sakai

Replica symmetry breaking in random matrix model: a toy model of wormhole networks

Physics Letters B,803:135280 2020(Feb. 07)

Author:Kazumi Okuyama

JT gravity, KdV equations and macroscopic loop operators

Journal of High Energy Physics,2020(01):156 2020(Jan. 24)

Author:Kazumi Okuyama, Kazuhiro Sakai

Holomorphic anomaly of 2d Yang-Mills theory on a torus revisited

Journal of High Energy Physics,2019(08):025 2019(Aug. 06)

Author:Kazumi Okuyama, Kazuhiro Sakai

Eigenvalue instantons in the spectral form factor of random matrix model

Journal of High Energy Physics,2019(03):147 2019(Mar. 25)

Author:Kazumi Okuyama

Spectral form factor and semi-circle law in the time direction

Journal of High Energy Physics,2019(02):161 2019(Feb. 25)

Author:Kazumi Okuyama

Connected correlator of 1/2 BPS Wilson loops in N=4 SYM

Journal of High Energy Physics,2018(10):037 2018(Oct. 05)

Author:Kazumi Okuyama

Resurgence analysis of 2d Yang-Mills theory on a torus

Journal of High Energy Physics,2018(08):065 2018(Aug. 13)

Author:Kazumi Okuyama, Kazuhiro Sakai

Phase diagram of q-deformed Yang-Mills theory on S^2 at non-zero theta-angle

Journal of High Energy Physics,2018(04):059 2018(Apr. 11)

Author:Kazumi Okuyama

Phase transition of anti-symmetric Wilson loops in N=4 SYM

Journal of High Energy Physics,2017(12):125 2017(Dec. 21)

Author:Kazumi Okuyama

Wilson loops in unitary matrix models at finite N

Journal of High Energy Physics,2017(07):030 2017(Jul. 07)

Author:Kazumi Okuyama

Wilson loops in 3d N= 4 SQCD from Fermi gas

Journal of High Energy Physics,2016(11):156 2016(Nov. 25)

Author:Kazumi Okuyama

α′-expansion of antisymmetric Wilson loops in N=4 SYM from Fermi gas

Progress of Theoretical and Experimental Physics,2016(11):113B05 2016(Nov. 16)

Author:Masaatsu Horikoshi, Kazumi Okuyama

Exact results for ABJ Wilson loops and open-closed duality

Journal of High Energy Physics,2016(10):132 2016(Oct. 24)

Author:Yasuyuki Hatsuda, Kazumi Okuyama

Instanton corrections of 1/6 BPS Wilson loops in ABJM theory

Journal of High Energy Physics,2016(09):125 2016(Sep. 20)

Author:Kazumi Okuyama

ABJ theory in the higher spin limit

Journal of High Energy Physics,08:174 2016(Aug. 31)

Author:Shinji Hirano, Masazumi Honda, Kazumi Okuyama, Masaki Shigemori

Numerical analysis of Coleman–de Luccia tunneling

International Journal of Modern Physics A,31(24):1650131 2016(Aug. 30)

Author:Yuhei Goto, Kazumi Okuyama

TBA-like integral equations from quantized mirror curves

Journal of High Energy Physics,2016(03):101 2016(Mar. 15)

Author:Kazumi Okuyama, Szabolcs Zakany

Orientifolding of the ABJ Fermi gas

Journal of High Energy Physics,2016(03):008 2016(Mar. 02)

Author:Kazumi Okuyama

Probing non-perturbative effects in M-theory on orientifolds

Journal of High Energy Physics,2016(01):054 2016(Jan. 11)

Author:Kazumi Okuyama

Exact instanton expansion of the ABJM partition function

Progress of Theoretical and Experimental Physics,2015(11):104 2015(Oct. 28)

Author:Yasuyuki Hatsuda, Sanefumi Moriyama, Kazumi Okuyama

Resummations and Non-Perturbative Corrections

Journal of High Energy Physics,1509:051 2015(Sep. 09)

Author:Yasuyuki Hatsuda, Kazumi Okuyama

Large N non-perturbative effects in N=4 superconformal Chern-Simons theories

Journal of High Energy Physics,1509:046 2015(Sep. 09)

Author:Yasuyuki Hatsuda, Masazumi Honda, Kazumi Okuyama

Probing non-perturbative effects in M-theory

Journal of High Energy Physics,1410:158 2014(Oct. 27)

Author:Yasuyuki Hatsuda, Kazumi Okuyama

Non-perturbative effects and the refined topological string

Journal of High Energy Physics,2014(9):168 2014(Sep. 29)

Author:Yasuyuki Hatsuda, Marcos Marino, Sanefumi Moriyama, Kazumi Okuyama

Exact results on ABJ theory and the refined topological string

Journal of High Energy Physics,2014(8):148 2014(Aug. 26)

Author:Masazumi Honda, Kazumi Okuyama

ABJM Wilson Loops in Arbitrary Representations

Journal of High Energy Physics,2013(10):168 2013(Oct. 24)

Author:Yasuyuki Hatsuda, Masazumi Honda, Sanefumi Moriyama, Kazumi Okuyama

Instanton bound states in ABJM theory

Journal of High Energy Physics,2013(5):054 2013(May 13)

Author:Yasuyuki Hatsuda, Sanefumi Moriyama, Kazumi Okuyama

Instanton effects in ABJM theory from Fermi gas approach

Journal of High Energy Physics,2013(1):158 2013(Jan. 24)

Author:Yasuyuki Hatsuda, Sanefumi Moriyama, Kazumi Okuyama

Exact results on the ABJM Fermi gas

Journal of High Energy Physics,2012(10):020 2012(Oct. 02)

Author:Yasuyuki Hatsuda, Sanefumi Moriyama, Kazumi Okuyama

A Note on the Partition Function of ABJM Theory on S3

Progress of Theoretical Physics,127(2):229-242 2012

Author:Kazumi Okuyama

Gauge-Higgs unification in spontaneously created fuzzy extra dimensions

Journal of High Energy Physics,2011(11):006 2011(Nov.)

Author:Kazuyuki Furuuchi, Takeo Inami, Kazumi Okuyama

D-branes Wrapped on Fuzzy del Pezzo Surfaces

Journal of High Energy Physics,1101:043 2011

Author:Kazuyuki Furuuchi, Kazumi Okuyama

Global AdS Picture of 1/2 BPS Wilson Loops

Journal of High Energy Physics,1001:096 2010

Author:Kazumi Okuyama

q-Deformed Oscillators and D-branes on Conifold

Physics Letters B,673:232-236 2009

Author:Kazumi Okuyama

Linear Sigma Models for the R^8/Z_k Orbifold

Physics Letters B,668:153-158 2008

Author:Kazumi Okuyama

N=4 SYM on K3 and the AdS(3)/CFT(2) Correspondence

Journal of High Energy Physics,0802:036 2008

Author:Kazumi Okuyama

Instanton Solution in Tachyon Cosmology

Physics Letters B,658:241-243 2008

Author:Kazumi Okuyama

D-Brane Amplitudes in Topological String on Conifold

Physics Letters B,645:275-280 2007

Author:KazumiOkuyama

t Hooft Expansion of 1/2 BPS Wilson Loop

JournalofHigh Energy Physics,0609:007 2006

Author:Kazumi Okuyama

Wilson Loops in N=4 SYM and Fermion Droplets

Journal of High Energy Physics,0606:057 2006

Author:Kazumi Okuyama, Gordon W. Semenoff

Hairpin Branes and D-Branes Behind the Horizon

Journal of High Energy Physics,0603:071 2006

Author:Kazumi Okuyama, Moshe Rozali

1/2 BPS Correlator and Free Fermion

Journal of High Energy Physics,0601:021 2006

Author:Kazumi Okuyama

D1-D5 on ALE Space

Journal of High Energy Physics,0512:042 2005

Author:Kazumi Okuyama

Linear Sigma Models of H and KK Monopoles

Journal of High Energy Physics,0508:089 2005

Author:Kazumi Okuyama

Annulus Amplitudes in the Minimal Superstring

Journal of High Energy Physics,0504:002 2005

Author:Kazumi Okuyama

Scattered Results in 2D String Theory

Journal of High Energy Physics,0410:065 2004

Author:Emil Martinec, Kazumi Okuyama

Annulus Amplitudes and ZZ Branes in Minimal String Theory

Journal of High Energy Physics,0408:026 2004

Author:David Kutasov, Kazumi Okuyama, Jongwon Park, Nathan Seiberg, David Shih

Three-Point Functions in N=4 SYM Theory at One-Loop

Journal of High Energy Physics,0408:055 2004

Author:Kazumi Okuyama, Li-Sheng Tseng

Comments on Half S-Branes

Journal of High Energy Physics,0309:053 2003

Author:Kazumi Okuyama

Wess-Zumino Term in Tachyon Effective Action

Journal of High Energy Physics,0305:005 2003

Author:Kazumi Okuyama

D-Branes on the Null-Brane

Journal of High Energy Physics,0302:043 2003

Author:Kazumi Okuyama

N=4 SYMon R times S^3 and PP-Wave

Journal of High Energy Physics,0211:043 2002

Author:Kazumi Okuyama

PP-Waves and Holography

Physical Review D,66:46004 2002

Author:Robert G. Leigh, Kazumi Okuyama, Moshe Rozali

Ratio of Tensions from Vacuum String Field Theory

Journal of High Energy Physics,0203:050 2002

Author:Kazumi Okuyama

Ghost Kinetic Operator of Vacuum String Field Theory

Journal of High Energy Physics,0201:027 2002

Author:Kazumi Okuyama

Siegel Gauge in Vacuum String Field Theory

Journal of High Energy Physics,0201:043 2002

Author:Kazumi Okuyama

Comma Vertex and String Field Algebra

Journal of High EnergyPhysics,0109:035 2001

Author:Kazuyuki Furuuchi, Kazumi Okuyama

Open String Fields As Matrices

Journal of High Energy Physics,0106:061 2001

Author:Teruhiko Kawano, Kazumi Okuyama

Open string fields as matrices

AIP Conf. Proc.,607:202-208 2001

Author:Kazumi Okuyama

Comments on Open Wilson Lines and Generalized Star Products

Physics Letters B,506:377-384 2001

Author:Kazumi Okuyama

Noncommutative Tachyon from Background Independent Open String Field Theory

Physics Letters B,499:167-173 2001

Author:Kazumi Okuyama

Boundary States in B-Field Background

PhysicsLetters B,499:305-314 2001

Author:Kazumi Okuyama

Free Field Appoach to StringTheoryon AdS_3

Nuclear Physics B,598:451-466 2001

Author:Kazuo Hosomichi,Kazumi Okuyama, Yuji Satoh

Path Integral Approach to String Theory on AdS_3

Nuclear Physics B,588:149-177 2000

Author:Nobuyuki Ishibashi, Kazumi Okuyama, Yuji Satoh

A Path Integral Representation of the Map between Commutative and Noncommutative Gauge Fields

Journal of High Energy Physics,0003:016 2000

Author:Kazumi Okuyama

Spinor Exchange in AdS_{d+1}

Nuclear Physics B,565:427-444 2000

Author:Teruhiko Kawano, Kazumi Okuyama

Fractional Strings in (p,q) 5-brane and Quiver Matrix String Theory

Journal of High Energy Physics,9808:002 1998

Author:Kazumi Okuyama, Yuji Sugawara

String Network and 1/4 BPS States in N=4 SU(n) Supersymmetric Yang-Mills Theory

Physics Letters B,432:338-342 1998

Author:Teruhiko Kawano, Kazumi Okuyama

Matrix Theory on Noncommutative Torus

Physics Letters B,433:29-34 1998

Author:Teruhiko Kawano, Kazumi Okuyama

BPS Condition of String Junction from M theory

Physics Letters B,426:294-296 1998

Author:Yutaka Matsuo, Kazumi Okuyama

SO(9,1) invariant matrix formulation of supermembrane

NuclearPhysics B,510:175-198 1998

Author:Kazuo Fujikawa, Kazumi Okuyama

BRST gauge fixing and the algebra of global supersymmetry

Nuclear Physics B,521:401-415 1998

Author:Kazuo Fujikawa, Kazumi Okuyama

On a Lorentz covariant matrix regularization of membrane theories

Physics Letters B,411:261-267 1997

Author:Kazuo Fujikawa, Kazumi Okuyama

This system is developed with the collaboration of Shinshu University and Media Fusion Co., Ltd. (C) Shinshu University (C) Media Fusion Co., Ltd.