• Painlevé analysis and integrability of the damped anharmonic oscillator equation

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    • Keywords


      Anharmonic oscillator; Painlevé analysis; exact solution

    • Abstract


      The Painlevé analysis is applied to the anharmonic oscillator equation$$\ddot x + d\dot x + Ax + Bx^2 + Cx^3 = 0$$. The following three integrable cases are identified: (i)C=0,d2=25A/6,A>0,B arbitrary, (ii)d2=9A/2,B=0,A>0,C arbitrary and (iii)d2=−9A/4,C=2B2/(9A),A<0,C<0,B arbitrary. The first two integrable choices are already reported in the literature. For the third integrable case the general solution is found involving elliptic function with exponential amplitude and argument.

    • Author Affiliations


      S Paul Raj1 S Rajasekar1 2

      1. Department of Physics, St. Xavier’s College, Tirunelveli - 627 002, India
      2. Department of Physics, Manonmaniam Sundaranar University, Tirunelveli - 627 002, India
    • Dates

  • Pramana – Journal of Physics | News

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      Posted on July 25, 2019

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