Analytic Expression of Voros Coefficients and Its Application to WKB Connection Problem

  • Kanehisa Takasaki
Conference paper


Usually, the WKB method starts from formal solutions (WKB or Liou ville-Green solutions) expanded in powers of the Planck constant, and connects these solutions by-asymptotic matching at turning points. Voros [V] proposed a resummation prescription of these formal calculations, and argued that his results should be deeply related with Ecalle’s theory of “resurgent functions.” Further progress along that line has been made by F. Pham and his coworkers [DDP]. We report another approach based upon an idea of Olver [O].


Harmonic Oscillator Riccati Equation Neumann Series Connection Problem Connection Formula 
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Copyright information

© Springer-Verlag Tokyo 1991

Authors and Affiliations

  • Kanehisa Takasaki
    • 1
  1. 1.RIMSKyoto UniversitySakyo-ku, Kyoto-shi 606Japan

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