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Tachyons and superluminal wave groups

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In the approximation that every inertial observer experiences a homogeneous, uniform flow of time and sees a space that is Euclidean, the arena of physics is Minkowskian and one speed is the same in all intertial frames. If a given intertial observer finds an infinitesimal source or particle traveling faster than this fundamental speed near a given event, the source must appear in some inertial frame spread over neighboring positions at a given time as a spacelike structure. If this structure persists over a period of proper time, it can be interpreted as a wave group. If it is conserved, it can be interpreted as a line or tube of force.

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  1. 1.

    A. Einstein,Ann. Physik 17, 891 (1905).

  2. 2.

    O. M. P. Bilaniuk, V. K. Deshpande, and E. C. G. Sudarshan,Am. J. Phys. 30, 718 (1962).

  3. 3.

    G. Feinberg,Phys. Rev. 159, 1089 (1967).

  4. 4.

    N. Mukunda,Ann. Phys. 61, 329 (1970).

  5. 5.

    G. H. Duffey,Theoretical Physics: Classical and Modern Views (Houghton Mifflin Co., Boston, 1973).

  6. 6.

    T. S. Shankara,Found. Phys. 4, 97 (1974).

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Duffey, G.H. Tachyons and superluminal wave groups. Found Phys 5, 349–354 (1975). https://doi.org/10.1007/BF00717449

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  • Arena
  • Proper Time
  • Inertial Frame
  • Uniform Flow
  • Wave Group