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for journal 'PTP'
author 'T.* Nishiyama' : 37
total : 37

Search Results : 37 articles were found.

  1. Progress of Theoretical Physics Vol. 5 No. 1 (1950) pp. 135-137 :
    Density Matrix and New Configuration Space
    T. Nishiyama
  2. Progress of Theoretical Physics Vol. 5 No. 6 (1950) pp. 909-919 :
    An Algebraic Theory of the Density Matrix, I
    Kodi Husimi and Toshiyuki Nishiyama
  3. Progress of Theoretical Physics Vol. 6 No. 1 (1951) pp. 1-16 :
    An Algebraic Theory of the Density Matrix, II
    Toshiyuki Nishiyama
  4. Progress of Theoretical Physics Vol. 6 No. 3 (1951) pp. 366-378 :
    Note on Many Fermion Problems
    Toshiyuki Nishiyama
  5. Progress of Theoretical Physics Vol. 6 No. 5 (1951) pp. 897-898 :
    On the Interaction of the Lattice Vibrations with the Conduction Electrons
    T. Nishiyama
  6. Progress of Theoretical Physics Vol. 6 No. 6 (1951) pp. 1025-1026 :
    On the Plasma-like Oscillation
    T. Nishiyama
  7. Progress of Theoretical Physics Vol. 7 No. 4 (1952) pp. 417-418 :
    On the Velocity Operator in Quantum Mechanics
    T. Nishiyama
  8. Progress of Theoretical Physics Vol. 8 No. 6 (1952) pp. 655-668 :
    A Quantum Theory of Boson Assemblies, I
    Toshiyuki Nishiyama
  9. Progress of Theoretical Physics Vol. 9 No. 3 (1953) pp. 245-267 :
    A Quantum Theory of Boson Assemblies, II
    Toshiyuki Nishiyama
  10. Progress of Theoretical Physics Vol. 12 No. 3 (1954) pp. 265-278 :
    A Hydrodynamical Description of Many Bose Particle Systems
    Toshiyuki Nishiyama
  11. Progress of Theoretical Physics Vol. 14 No. 1 (1955) pp. 37-51 :
    Theory of Sound Waves and Collective Description
    Toshiyuki Nishiyama
  12. Progress of Theoretical Physics Vol. 16 No. 3 (1956) pp. 244-246 :
    State Vectors in the Collective Description
    Toshiyuki Nishiyama
  13. Progress of Theoretical Physics Vol. 17 No. 5 (1957) pp. 711-732 :
    On Collective and Internal Motions in a Bose System
    Toshiyuki Nishiyama
  14. Progress of Theoretical Physics Vol. 18 No. 1 (1957) pp. 93-95 :
    Stationary Fusion Reactions at Low Temperatures
    Toshiyuki Nishiyama, Tamotsu Sekiya and Yôiti Watanabe
  15. Progress of Theoretical Physics Vol. 20 No. 2 (1958) pp. 245-246 :
    Equivalent Hamiltonian of an Electron Gas at High Density
    Toshiyuki Nishiyama
  16. Progress of Theoretical Physics Vol. 21 No. 3 (1959) pp. 389-408 :
    Electrostatic Interactions in an Electron-Ion Gas at High Density
    Toshiyuki Nishiyama
  17. Progress of Theoretical Physics Vol. 37 No. 5 (1967) pp. 1029-1030 :
    Sum Rule and Collective Description
    Toshiyuki Nishiyama
  18. Progress of Theoretical Physics Vol. 38 No. 5 (1967) pp. 1062-1082 :
    Interaction of an Individual Particle with Phonons in an Interacting Many-Boson System
    Toshiyuki Nishiyama
  19. Progress of Theoretical Physics Vol. 42 No. 1 (1969) pp. 145a-145a : (2)
    Interaction of an Individual Particle with Phonons in an Interacting Many-Boson System
    Toshiyuki Nishiyama
  20. Progress of Theoretical Physics Vol. 42 No. 4 (1969) pp. 985-987 : (2)
    Microscopic Theory of the Energy Spectrum of Liquid Helium
    Toshiyuki Nishiyama
  21. Progress of Theoretical Physics Vol. 45 No. 3 (1971) pp. 730-745 : (2)
    Method of Collective Description of the Excitations in Liquid Helium
    Toshiyuki Nishiyama
  22. Progress of Theoretical Physics Vol. 48 No. 1 (1972) pp. 188-197 : (4)
    Inelastic Scattering of Negative Pion on C$^{12}$
    Toshio Nishiyama and Hisao Ohtsubo
  23. Progress of Theoretical Physics Vol. 48 No. 5 (1972) pp. 1766-1766 : (4)
    Inelastic Scattering of Negative Pion on C$^{12}$
    Toshio Nishiyama and Hisao Ohtsubo
  24. Progress of Theoretical Physics Vol. 50 No. 1 (1973) pp. 329-331 : (2)
    Line Width of Rotons in Hell for Wave Numbers between 2A$^{-1}$ and 3A$^{-1}$
    Toshiyuki Nishiyama
  25. Progress of Theoretical Physics Vol. 50 No. 3 (1973) pp. 726-739 : (2)
    Dispersion Equation and Level Density of Rotons in Liquid He II
    Toshiyuki Nishiyama
  26. Progress of Theoretical Physics Vol. 51 No. 4 (1974) pp. 1264-1266 : (2)
    Velocity and Phase Operators for Many-Boson Systems
    Toshiyuki Nishiyama
  27. Progress of Theoretical Physics Vol. 52 No. 3 (1974) pp. 952-970 : (4)
    Inelastic Scattering of Negative Pions on C$^{12}$ under Distorted Wave Impulse Approximation
    Toshio Nishiyama and Hisao Ohtsubo
  28. Progress of Theoretical Physics Vol. 52 No. 4 (1974) pp. 1161-1173 : (2)
    Pair Theory for Individual Particles in Liquid Helium II
    Toshiyuki Nishiyama and Yoiti Watanabe
  29. Progress of Theoretical Physics Vol. 52 No. 6 (1974) pp. 1784-1797 : (2)
    A Long-Range Attractive Interaction of Rotons in Superfluid $^4$He
    Toshiyuki Nishiyama and Shunkichi Sai
  30. Progress of Theoretical Physics Vol. 54 No. 2 (1975) pp. 384-395 : (2)
    Ground-State Energy of a Many-Boson System
    Toshiyuki Nishiyama
  31. Progress of Theoretical Physics Vol. 54 No. 2 (1975) pp. 597-599 : (2)
    Momentum Distribution of an Interacting Many-Boson System
    Toshiyuki Nishiyama
  32. Progress of Theoretical Physics Vol. 56 No. 1 (1976) pp. 16-30 : (2)
    Momentum Distribution of an Interacting Many-Boson System at High Density
    Toshiyuki Nishiyama
  33. Progress of Theoretical Physics Vol. 57 No. 1 (1977) pp. 12-27 : (2)
    Use of a Coherent-State Representation for a Many-Boson System at High Density
    Masakazu Tsujii and Toshiyuki Nishiyama
  34. Progress of Theoretical Physics Vol. 57 No. 2 (1977) pp. 393-409 : (2)
    Collective Variable Approach to Many-Boson Systems at High Density
    Toshiyuki Nishiyama and Masakazu Tsujii
  35. Progress of Theoretical Physics Vol. 62 No. 5 (1979) pp. 1215-1224 : (2)
    Momentum Distribution of a Charged Bose Gas at High Density
    Toshiyuki Nishiyama and Yoiti Watanabe
  36. Progress of Theoretical Physics Vol. 64 No. 5 (1980) pp. 1565-1576 : (2)
    Momentum Distribution and Ground-State Energy of Liquid $^{4}$He at the Absolute Zero Temperature
    Toshiyuki Nishiyama and Yoiti Watanabe
  37. Progress of Theoretical Physics Vol. 84 No. 3 (1990) pp. 420-424 : (2)
    Condensate Fraction of a Charged Bose Gas at High Density
    Toshiyuki Nishiyama

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