Fujiwara Yoshikazu FUJIWARA Yoshikazu

Articles:  1-20 of 44

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  • nα Resonating-Group Calculation with a Quark-Model G-Matrix NN Interaction

    FUJIWARA Yoshikazu , KOHNO Michio , SUZUKI Yasuyuki , Department of Physics Kyoto University , Physics Division Kyushu Dental College , Department of Physics and Graduate School of Science and Technology Niigata University

    We calculate nα phase-shifts and scattering observables in the resonating-group method, using the nuclear-matter G-matrix of an SU_6 quark-model NN interaction. The G-matrix is generated in the recent …

    Progress of Theoretical Physics 120(2), 289-314, 2008-08-25

    DOI  References (30)

  • Quark-Model Baryon-Baryon Interaction and Its Applications to Hypernuclei

    FUJIWARA Yoshikazu , NAKAMOTO Choki , SUZUKI Yasuyuki , KOHNO Michio , MIYAGAWA Kazuya

    The quark-model baryon-baryon interaction fss2, proposed by the Kyoto-Niigata group, is a unified model for the complete baryon octet (B_8 = N, Λ, Σ and Ξ), which is formulated in a framework of the ( …

    Progress of Theoretical Physics (156), 17-36, 2004-12-28

    DOI  NDL Digital Collections  References (44)

  • Strength of the Σ Single-Particle Potential in Nuclei from Semiclassical Distorted Wave Model Analysis of the (π^-, K^+) Inclusive Spectrum

    KOHNO Michio , FUJIWARA Yoshikazu , WATANABE Yukinobu , OGATA Kazuyuki , KAWAI Mitsuji , Physics Division Kyushu Dental College , Department of Physics Kyoto University , Department of Advanced Energy Engineering Science Kyushu University , Department of Physics Kyushu University , Department of Physics Kyushu University

    The semiclassical distorted wave model is developed to describe (π^-, K^+) inclusive spectra related to Σ^- formation measured at KEK with p_π=1.2 GeV/c. The shape and magnitude of the spectrum obtain …

    Progress of Theoretical Physics 112(5), 895-900, 2004-11-25

    DOI  References (33)

  • Redundant Components in the 3α Faddeev Equation Using the 2α RGM Kernel

    FUJIWARA Yoshikazu , SUZUKI Yasuyuki , MIYAGAWA Kazuya , KOHNO Michio , NEMURA Hidekatsu , Department of Physics Kyoto University , Department of Physics Niigata University , Department of Applied Physics Okayama Science University , Physics Division Kyushu Dental College , Institute of Particle and Nuclear Physics KEK

    The 3α Faddeev equation using the 2α RGM kernel involves redundant components whose contribution to the total wave function cancels out completely. We propose a practical method to solve this Faddeev …

    Progress of Theoretical Physics 107(5), 993-1000, 2002-05-25

    DOI  References (8)

  • Three-Cluster Equation Using the Two-Cluster RGM Kernel

    FUJIWARA Yoshikazu , NEMURA Hidekatsu , SUZUKI Yasuyuki , MIYAGAWA Kazuya , KOHNO Michio , Department of Physics Kyoto University , Institute of Particle and Nuclear Physics KEK , Department of Physics Niigata University , Department of Applied Physics Okayama Science University , Physics Division Kyushu Dental College

    We propose a new type of three-cluster equation which uses two-cluster resonating-group-method (RGM) kernels. In this equation, the orthogonality of the total wave function to two-cluster Pauli-forbid …

    Progress of Theoretical Physics 107(4), 745-757, 2002-04-25

    DOI  References (22)

  • G-Matrix Equation in the Quark-Model Resonating-Group Method for Baryon Interaction

    FUJIWARA Yoshikazu , KOHNO Michio , NAKAMOTO Choki , SUZUKI Yasuyuki , Department of Physics Kyoto University , Physics Division Kyushu Dental College , Suzuka National College of Technology , Department of Physics Niigata University

    The G-matrix equation is most straightforwardly formulated in the resonating-group method if the quark-exchange kernel is directly used as the driving term for the infinite sum of all the ladder diagr …

    Progress of Theoretical Physics 104(5), 1025-1040, 2000-11-25

    DOI  References (28)

  • Study of light A- and AA-Hypernuclei with the Stochastic Variational Method and Effective AN Potentials

    NEMURA Hidekatsu , SUZUKI Yasuyuki , FUJIWARA Yoshikazu , NAKAMOTO Choki , Graduate School of Science and Technology Niigata University , Department of Physics Niigata University , Department of Physics Kyoto University , Suzuka National College of Technology

    We first determine the LN S-wave phase shifts so as to reproduce the experimental Λ separation energies of A=3, 4 Λ-hypernuclei (<SUB>Λ</SUB><SUP>3</SUP>H, …

    Progress of Theoretical Physics 103(5), 929-958, 2000-05-25

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  • Lippmann-Schwinger Resonating-Group Formalism for NN and YN Interactions in an SU_6 Quark Model

    FUJIWARA Yoshikazu , KOHNO Michio , FUJITA Tadashi , NAKAMOTO Choki , SUZUKI Yasuyuki , Department of Physics Kyoto University , Department of Physics Kyoto University , Physics Division Kyushu Dental College , Suzuka National College of Technology , Department of Physics Niigata University

    We formulate a Lippmann-Schwinger-type resonating-group equation to calculate invariant amplitudes of the quark-model baryon-baryon interaction. When applied to our recently proposed SU_6 quark model …

    Progress of Theoretical Physics 103(4), 755-794, 2000-04-25

    DOI  References (34)

  • Quark Pauli Effects on the Binding Energies of s-Shell Λ Hypernuclei

    NEMURA Hidekatsu , SUZUKI Yasuyuki , FUJIWARA Yoshikazu , NAKAMOTO Choki , Graduate School of Science aud Technology Niigata University , Department of Physics Niigata University , Department of Physics Kyoto University , Suzuka National College of Technology

    The binding energies of s-shell hypernuclei are calculated using the stochastic variational method. It is shown that the Pauli principle at the quark level brings about a special constraint on the dyn …

    Progress of Theoretical Physics 101(4), 981-986, 1999-04-25

    DOI  References (29) Cited by (2)

  • Inelastic Capture Ratio at Rest and Low-Energy Cross Sections of Σ^-p Scattering in the SU_6 Quark Model

    FUJIWARA Yoshikazu , FUJITA Tadashi , NAKAMOTO Choki , SUZUKI Yasuyuki , Department of Physics Kyoto University , Department of Physics Kyoto University , Suzuka National College of Technology , Department of Physics Niigata University

    The inelastic capture ratio at rest, r<SUB>R</SUB>, and low-energy total cross sections of Σ<SUP>-</SUP> p scattering are examined in the recent SU<SUB>6</SUB> …

    Progress of Theoretical Physics 100(5), 957-976, 1998-11-25

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  • Scattering Observables of the NN and YN Interactions in the SU_6 Quark Model

    FUJITA Tadashi , FUJIWARA Yoshikazu , NAKAMOTO Choki , SUZUKI Yasuyuki , Department of Physics Kyoto University , Department of Physics Kyoto University , Suzuka National College of Technology , Department of Physics Niigata University

    Scattering observables of the NN and YN interactions are investigated in a recent quark model developed for the simultaneous description of the NN and YN systems. The model is formulated in the (3q)-( …

    Progress of Theoretical Physics 100(5), 931-955, 1998-11-25

    J-STAGE  References (35)

  • On the Bifurcation of Trapezoid Maps : An Example of a Class of One-Dimensional Maps with a Superconvergent Period Doubling Cascade

    UEZU Tatsuya , FUJIWARA Yuka , Department of Physics Nara Women's University , Department of Physics Nara Women's University

    We investigate the period doubling cascade in symmetric and asymmetric trapezoid maps. We prove that as the slope a of the trapezoid is increased, there occurs a cascade of period doubling bifurcation …

    Progress of Theoretical Physics 100(1), 39-52, 1998-07-25

    J-STAGE  References (8)

  • Central Force of Baryon-Baryon Interactions with S = -2 in the SU_6 Quark Model

    NAKAMOTO Choki , SUZUKI Yasuyuki , FUJIWARA Yoshikazu , Research Center for Nuclear Physics Osaka University , Department of Physics Niigata University , Department of Physics Kyoto University

    We investigate the strangeness S=-2 central interaction between two octet baryons using a unified formulation of the (3q)-(3q) resonating-group method in the SU_6 quark model. The full Fermi-Breit qq …

    Progress of Theoretical Physics 97(5), 761-779, 1997-05-25

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  • Extended Time-Reversal Operator and the Symmetries of the Hyperon-Nucleon Interaction

    FUJIWARA Yoshikazu , NAKAMOTO Choki , SUZUKI Yasuyuki , ZONG-YE Zhang , Department of Physics Kyoto University , Research Center for Nuclear Physics Osaka University , Department of Physics Niigata University , Institute of High Energy Physics Academia Sinica

    An extended time-reversal operator incorporating charge conjugation in the flavor SU_3 space is introduced in order to study the spin-flavor structure of the hyperon-nucleon interaction. Particle-hole …

    Progress of Theoretical Physics 97(4), 587-616, 1997-04-25

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  • Scattering Observables of Σ^+p System in the SU_6 Quark Model

    FUJITA Tadashi , FUJIWARA Yoshikazu , NAKAMOTO Choki , SUZUKI Yasuyuki , Department of Physics Kyoto University , Department of Physics Kyoto University , Research Center for Nuclear Physics Osaka University , Department of Physics Niigata University

    Scattering observables of the Σ^+p interaction are examined in a (3q)-(3q) RGM which incorporates effective meson-exchange potentials determined consistently with the NN data.The differential cross se …

    Progress of Theoretical Physics 96(3), 653-658, 1996-09-25

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  • Scattering Observables of NN Interaction in the SU_6 Quark Model

    FUJITA Tadashi , FUJIWARA Yoshikazu , NAKAMOTO Choki , SUZUKI Yasuyuki , YAMAMOTO Toshinori , TAMAGAKI Ryozo , Department of Physics Kyoto University , Department of Physics Kyoto University , Research Center for Nuclear Physics Osaka University , Research Center for Nuclear Physics Niigata University , Department of Physics Kyoto University , Department of Physics Kyoto University

    Scattering observables of the NN interaction are investigated in a recent quark model developed for a unified description of NN and hyperon-uncleon systems. Satisfactory agreement with experiment is o …

    Progress of Theoretical Physics 96(2), 463-468, 1996-08-25

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  • Wavelet Analysis of One-Dimensional Cosmological Density Fluctuations

    FUJIWARA Yoshi , SADA Jiro , Yukawa Institute for Theoretical Physics Kyoto University , Department of Fundamental Sciences FIHS Kyoto University

    Wavelet analysis is proposed as a new tool for studying the large-scale structure formation of the universe. To reveal its usefulness, the wavelet decomposition of a one-dimensional model of cosmologi …

    Progress of Theoretical Physics 95(6), 1059-1077, 1996-06-25

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  • Nonlinear Self-Modulation in Newtonian Gravity

    FUJIWARA Yoshi , SODA Jiro , Yukawa Institute for Theoretical Physics Kyoto Unicersity , Department of Fundamental Sciendes FIHS Kyoto University

    We study quasi-nonlinear of the density perturbation in Newtonian gravity. Weak mode-mode coupling in a small range below the Jeans wavelength is considered. In order to extract nonlinear dynamics we …

    Progress of Theoretical Physics 95(1), 51-63, 1996-01-25

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  • RGM Study of the Hyperon-Nucleon Interaction in the SU_6 Quark Model. II ; Analysis of ΛN-ΣN(I=1/2) Coupled-Channel System

    FUJIWARA Yoshikazu , NAKAMOTO Choki , SUZUKI Yasuyuki , Department of Physics Kyoto University , Graduate School of Science and Technology Niigata University , Department of Physics Niigata University

    A detailed quark-model study of the ΛΝ-ΣΝ(I=1/2) system is given in a coupled-channel formulation of the RGM-F which has been recently introduced to achieve a unified understanding of the NN and hyper …

    Progress of Theoretical Physics 94(3), 353-372, 1995-09-25

    J-STAGE  References (29) Cited by (1)

  • RGM Study of the Hyperon-Nucleon Interaction in the SU_6 Quark Model. I ; Analysis of NN and Σ^+p Systems

    FUJIWARA Yoshikazu , NAKAMOTO Choki , SUZUKI Yasuyuki , Department of Physics Kyoto University , Graduate School of Science and Technology Niigata University , Departmenet of Physics Niigata University

    A unified description of the hyperon-nucleon interaction consistent with the NN interaction is given in the RGM formulation of the SU_6 quark model, in which the full Fermi-Breit interaction with expl …

    Progress of Theoretical Physics 94(2), 215-232, 1995-08-25

    DOI  References (20) Cited by (1)

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