On a construction of the fundamental solution for the free Weyl equation by Hamiltonian path-integral method - an exactly solvable case with "odd variable coefficients"
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概要
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A fundamental solution for the free Weyl equation is easily constructed using the Clifford relation of the Pauli matrices. But, we insist on Feynmans idea of representing a fundamental solution using classical objects. To do this, we first reformulate the usual matrix-valued Weyl equation on the ordinary Euclidian space to the "non-commutative scalar"-valued equation on the superspace, called the super Weyl equation. Then, we may find the classical mechanics corresponding to that super Weyl equation. Using analysis on the superspace, we may associate the classical Hamiltonian with that super Weyl equation. From this mechanics, we define phase and amplitude functions which are solutions of the Hamilton-Jacobi and continuity equations, respectively. Moreover, they are exactly solvable. Then, we define a Fourier integral operator with phase and amplitude given by those functions, which gives a solution to the initial value problem of that super Weyl equation. The method and idea developped here, may be applied not only to the Pauli, Weyl or Dirac equations but also to any system of P.D.Es.
- 東北大学の論文
著者
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Inoue Atsushi
Department Of Mathematics Tokyo Institute Of Technology
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Inoue Atsushi
Deparmtnent Of Surgery Kuniyoshi Hospital
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Inoue Atsushi
Department of Mathematics, Tokyo Institute of Technology
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