Updated on 2023/11/21

写真a

 
KOJIMA Takeo
 
Title
Professor

Research Areas

  • Natural Science / Mathematical analysis

  • Natural Science / Basic analysis

  • Exactly Solvable Model

Graduating School

  • Kyoto University, Faculty of Science

    1992.03, Graduated

Graduate School

  • Kyoto University, Faculty of Science

    Doctor's Course, 1992, Completed

  • Kyoto University, Graduate School, Division of Natural Science

    Master's Course, 1994.03, Completed

  • Kyoto University, Graduate School of Science

    Doctor's Course, 1997, Completed

  • Kyoto University, Graduate School, Division of Natural Science

    Doctor's Course, 1997, Completed

  • Kyoto University, Graduate School, Division of Natural Science, Mathematics, Mathematical Science

    Doctor's Course, 1997.03, Completed

Degree

  • Ph.D, Kyoto University, 1997.03

External Career

  • RIMS, Kyoto University, Special researcher of the Japan Society for the Promotion of Science, 1997.04 - 1998.03

  • Nihon University, Research Assistant, 1998.04 - 2001.03

  • Nihon University, Lecturer, 2001.04 - 2010.03

  • Yamagata University, Professor, 2015.04 -

Academic Society Affiliations

  • Mathematical Society of Japan

 

Papers

  • Quadratic relation of the deformed W algebra of twisted algebra A_{2N}^{(2)}, Symmetry, Integrability and Geometry: Methods and Applications, 18(072) 1-36, 2022.09

    Takeo Kojima

    Single Author

  • Quadratic relations of the deformed W-superalgebra Wqt(A(M,N)), Journal of Physics A: Math. Theor., 54 335201, 2021.07

    Takeo Kojima

    Single Author

  • Quadratic relations of the deformed W-superalgebra Wqt(sl(2|1)), Journal of Mathematical Physics, 62 051702, 2021.03

    Takeo Kojima

    Single Author

  • Commutation relations of vertex operators for U-q(sl^(M,N)), JOURNAL OF MATHEMATICAL PHYSICS, 59(10) , 2019.04

    Kojima Takeo

    Single Author

  • Wakimoto realization of the quantum affine superalgebra $U_q(\hat{sl}(M|N))$, Springer Proceedings, 263 149-163, 2018.12

    Takeo Kojima

    Single Author

  • A bosonization of Uq(sl^(M|N)), Communication in Mathematical Physics, 355 603-644, 2017.08

    T.Kojima

    Single Author

  • Boundary state of Uq(gl^(N|N)) analog of half-infinite t-J model, J.Stat.Mech., 2016 023108(38pp), 2016.03

    Takeo Kojima

    Single Author

  • Vertex operator approach to semi-infinite spin chain, Springer Proceedings : Mathematics ans Statistics, 111 265-277, 2015.01

    T.Kojima

    Single Author

  • Form factor of thehalf infinite XXZ chain with a triangular boundary, Journal of Statistical Mechanics, 2014.09

    P.Baseilhac, T.Kojima

    Single Author

  • Bosonization of Superalgebra $U_q(sl(N|1)^)$ for an arbitrary level, Proceedings for 7th Mathematical Physics Meeting, 2014.01

    Takeo Kojima

    Single Author

  • Correlation functions of the half-infinite XXZ spin chain with a triangular boundary, Nucl.Phys.B, 378-413, (2014), 2014.01

    P.Baseilhac, T.Kojima

    Multiple Authorship (Including Foreigners)

  • Diagonalization of Transfer Matrix of Supersymmetry $Uq(sl(M+1|N+1))$ Chain with a Boundary, J.Math.Phys., 54 043507(1)-043507(40), 2013.06

    Takeo Kojima

    Single Author

  • Wakimoto Realization of Superalgebra $U_q(\hat{sl}(N|1))$ and $U_{q,p}(\hat{sl}(N|1))$, Springer Proceedings : Statistics and Mathematics, 36 263-276, 2013.04

    Takeo Kojima

    Single Author

  • Bosonization and Vertex Operator of Supersymmetry $Uq(sl^(N|1))$ for Level $k$, Jornal of Physics A: Conf. Proc., 410 02062, 2013.01

    Takeo Kojima

    Single Author

  • Screenings and vertex operators of quantum superalgebra $U_q(\hat{sl}(N|1))$, Journal of Mathematical Physics, 53 083503(1)-(30pages), 2012.09

    TAKEO KOJIMA

    Single Author

  • FREE FIELD REALIZATION OF QUANTUM SUPERALGEBRA $U_q(\hat{sl}(N|1))$, Journal of Mathematical Physics, 53(1) 013515-(15pp), 2012.03

    TAKEO KOJIMA

    Single Author

  • Infinitely many commuting operators for elliptic quantum group $U_{q,p}$, Proceedings for 6th Mathematical Physics Meeting, held in Belgrade, Serbia 2010., 6 235-250, 2012.01

    Takeo Kojima

    Single Author

  • Elliptic Deformed Superalgebra $U_{q,p}(\hat{sl}(M|N))$, Journal of Physics A:Math.Theor., 44(485205(23pp)) 1-23, 2011.11

    Takeo Kojima

    Single Author

  • A remark on ground state of Izergin-Korepin model, Int.J.Mod.Phys.A, [arXiv..1101.4078], 26(12) 1973-1989, 2011.05

    Takeo Kojima

    Single Author

  • Diagonalization of infinite transfer matrix of boundary $U_{q,p}(sl_N^)$ face model, Journal of Mathematical Physics, 52 01351-(26pp), 2011.01

    Takeo Kojima

    Single Author

  • Free field approach to boundary transfer matrix : recent advances, Journal of Physics : Conference Series, 284 012041-1-012041-10, 2011.01

    Takeo Kojima

    Single Author

  • Free field realization of commutative family of elliptic Feigin-Odesskii algebra, RIMS Kokyuroku, 1700 11-32, 2010.09

    Takeo Kojima

    Single Author

  • Diagonalization of boundary transfer matrix for the $U_{q,p}(sl(3,C)^)$, American Institute of Physics Conference Proceedings, 1243 241-253, 2010.06

    Takeo Kojima

    Single Author

  • Wakimoto realization od Drinfeld current for the elliptic quantum group $U_{q,p}(sl_3^)$, Physics of Atomic Nuclei, 78 367-374, 2010.01

    Takeo Kojima

    Single Author

  • Wakimoto realization for the elliptic quantum group $U_{q,p}(sl_N^)$, International Journal of Modern Physics A, 30 5561-5578, 2009.11

    Takeo Kojima

    Single Author

  • The Integrals of Motion for the deformation of the Virasoro and W_N algebra, Journal of Nonlinear Analysis, 2009.08

    T.Kojima, J.Shiraishi

    Multiple Authorship (Including Foreigners)

  • A remark on the integrals of motion associated with level $k$ realization of the elliptic algebra $U_{q,p}(sl_2^)$, Journal of Geometry, Integrability and Quantization, 10 183-196, 2009.01

    T.Kojima, J.Shiraishi

    Multiple Authorship (Including Foreigners)

  • The integrals of motion for the deformed W-algebra $W_{q,t}(gl_N^)$, Communication in Mathematical Physics, 283 795-851, 2008.10

    T.Kojima, J.Shiraishi

    Multiple Authorship (Including Foreigners)

  • The Baxter's Q-operator for the W-algebra W_N, Journal of Physics A, 41(35) 355206(16pp), 2008.10

    Takeo Kojima

    Single Author

  • The integrals of motion for the deformed W-algebra $W_{q,t}(sl_N^)$, Proceedings for Representation Theory 2006, 2007.06

    B.Feigin, T.Kojima, J.Shiraishi, H.Watanabe

    Multiple Authorship (Including Foreigners)

  • The vertex face correspondence and correlation function of eight vertex model, Nuclear Physics B, 720 348-398, 2005.10

    T.Kojima, H.Konno, R.Weston

    Multiple Authorship (Including Foreigners)

  • The Drinfeld Realization of the Elliptic Quantum Group $B_{q,r}(A_2^{(2)})$, Journal of Mathematical Physics, 45 3146-3179, 2004.08

    T.Kojima, H.Konno

    Multiple Authorship (Including Foreigners)

  • The elliptic algebra $U_{q,p}(sl_N^)$ and the deformation of the $W_N$ algebra, Journal of Physics A, 37(2) 371-383, 2004.04

    T.Kojima, H.Konno

    Multiple Authorship (Including Foreigners)

  • The quantum Knizhnik-Zamolodchikov equations associated with $U_q(A_2^{(2)})$, International Journal of Modern Physics A, 18(2) 225-248, 2003.12

    Takeo Kojima

    Single Author

  • The elliptic algebra $U_{q,p}(sl_N^)$ and the Drinfeld realization of the elliptic quantum group $B_{q,r}(sl_N^)$, Communication in Mathematical Physics, 239 405-447, 2003.08

    T.Kojima, H.Konno

    Multiple Authorship (Including Foreigners)

  • The affine $A_{N-1}^{(1)}$ Toda fields with boundary reflection, International Journal of Modern Physics A, 17(4) 487-513, 2002.10

    Takeo Kojima

    Single Author

  • The $SU(N)$ invariant massive Thirring model with boundary reflection, International Journal of Modern Physics A, 16(15) 2665-2689, 2001.12

    Takeo Kojima

    Single Author

  • The 19 vertex model at critical regime $|q|=1$, International Journal of Modern Physics A, 16(9) 1559-1578, 2001.08

    Takeo Kojima

    Single Author

  • The critical $A_{N-1}^{(1)}$ chain, Journal of Physics A, 34(6) 1181-1201, 2001.08

    T.Kojima, S.Yamasita

    Multiple Authorship (Including Foreigners)

  • The massless XXZ chain with a boundary, International Journal of Modern Physics A, 16(3) 409-424, 2001.05

    Takeo Kojima

    Single Author

  • The free field approach to the higher rank XXZ chain with a boundary, Journal of Nonlinear Analysis, 47 5187-5198, 2001.05

    Takeo Kojima

    Single Author

  • The difference equations for the higher rank XXZ model with a boundary, International Journal of Modern Physics A, 15(23) 3699-3716, 2000.11

    T.Kojima, Y.Quano

    Multiple Authorship (Including Foreigners)

  • Form factors of the $SU(2)$ invariant massive Thirring model with boundary reflection, International Journal of Modern Physics A, 15(19) 3037-3052, 2000.09

    H.Furutsu, T.Kojima, Y.Quano

    Multiple Authorship (Including Foreigners)

  • The $U_{q,p}(sl_N^)$ analogue of the XXZ chain with a boundary, Journal of Mathematical Physics, 41(7) 4413-4436, 2000.08

    H.Furutsu, T.Kojima

    Multiple Authorship (Including Foreigners)

  • Type-II vertex operators for $A_{N-1}^{(1)}$ face model, International Journal of Modern Physics A, 15(10) 1533-1556, 2000.05

    H.Furutsu, T.Kojima, Y.Quano

    Multiple Authorship (Including Foreigners)

  • Spontaneous polarization of Kondo problem associated with the higher spin six vertex model, Journal of Physics A, 32(34) 6149-6168, 1999.10

    H.Fukushima, T.Kojima

    Multiple Authorship (Including Foreigners)

  • Dynamical correlation functions for an impenetrable Bose gas with Neumann or Dirichlet boundary condition, Journal of Nonlinear Mathematical Physics, 6(1) 6149-6168, 1999.08

    Takeo Kojima

    Single Author

  • Ground-satate correlation functions for an impenetrable Bose gas with Neumann and Dirichlet boundary conditions, Journal　of Statistical Physics, 88 713-743, 1997.08

    Takeo Kojima

    Single Author

  • Completely integrable equation for the quantum correlation functions of the quantum NS equation , Communication in Mathematical Physics, 189(3) 709-728, 1997.05

    T.Kojima, V.Koreoin, N.Slavnov

    Multiple Authorship (Including Foreigners)

  • Determinant representation for dynamical correlation functions of the quantum NS equation, Communication in Mathermatical Physics, 188(3) 657-689, 1997.05

    T.Kojima, V.Korepin, N.Slavnov

    Multiple Authorship (Including Foreigners)

  • The Maxwell-Bloch equation and correlation functions for penetrable Bose gas, Journal of Physics A, 30(14) 5105-5121, 1997.04

    T.Kojima, V.Korepin

    Multiple Authorship (Including Foreigners)

  • Differential equation of correlation function for Bose gas in small mass limit, IIAS Report 1997-No.1, 1997.04

    T,Kojima and V.Korepin

    Multiple Authorship (Including Foreigners)

  • Annihilation poles of a Smirnov-type integral formulae for solutions to quantum Knizhnik-Zamolodchikov equation, Journal of Physics A, 28(12) 3479-3491, 1995.05

    T.Kojima, K.Miki, Y.Quano

    Multiple Authorship (Including Foreigners)

  • XXZ chain with a boundary, Nuclear Physics B, 441(3) 437-470, 1995.04

    M.Jimbo,R.Kedem,T.Kojima,H.Konno,T.Miwa

    Multiple Authorship (Including Foreigners)

  • Quantum Knizhnik-Zamolodchikov equation for $U_q(sl_N^)$ and integral formula, Journal of Physics A, 27(20) 6867-6826, 1994.09

    T.Kojima, Y.Quano

    Multiple Authorship (Including Foreigners)

  • Smirnov's integrals and the quantum Knizhnik-Zamolodchikov of Level 0, Journal of Physics A :Math.Gen., 27(9) 3267-3283, 1994.08

    M.Jimbo, T.Kojima, T.Miwa, Y.Quano

    Multiple Authorship (Including Foreigners)

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Grant-in-Aid for Scientific Research

  • Grant-in-Aid for Scientific Research(C)，2019.04 - 2024.03

  • Grant-in-Aid for Scientific Research(C)，2014.04 - 2019.03

  • Grant-in-Aid for Scientific Research(C)，2009.04 - 2014.03

  • Grant-in-Aid for Young Scientists(B)，2006.04 - 2009.03

  • Grant-in-Aid for Young Scientists(B)，2002.04 - 2005.03

  • Grant-in-Aid for Young Scientists(B)，1999.04 - 2001.03

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Presentations

  • Workshop of Mathematical Physics and Representation Theory, Domestic presentation, 2011.08, Elliptic Deformed Superalgebra $U_{q,p}(\hat{sl}(M|N))$, Oral presentation (invited, special)