PT-symmetric cubic anharmonic oscillator as a physical model

@article{Mostafazadeh2005PTsymmetricCA,
  title={PT-symmetric cubic anharmonic oscillator as a physical model},
  author={Ali Mostafazadeh},
  journal={Journal of Physics A},
  year={2005},
  volume={38},
  pages={6557-6569}
}
There is a factor of 2 error in equation (61) of this paper. Correcting this error leads to minor changes in equations (62) and (63). Please see PDF for details. 
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