Browsing Department of Physics by Subject "PHYSICS"

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Comment on 'Nonlinear dynamics of a position-dependent mass-driven Duffing-type oscillator'

Mustafa, Omar (IOP Publishing, 2013-09)

Using a generalized coordinate along with a proper invertible coordinate transformation, we show that the Euler–Lagrange equation used by Bagchi et al (2013 J. Phys. A: Math. Theor. 46 032001) is in clear violation of ...
Comment on 'Position-dependent effective mass Dirac equations with PT-symmetric and non-PT-symmetric potentials

Mustafa, Omar; Mazharimousavi, Habib S. (IOP Publishing, 2007)

Jia and Dutra (2006 J. Phys. A: Math. Gen. 39 11877) have considered the one-dimensional non-Hermitian complexified potentials with real spectra in the context of position-dependent mass in the Dirac equation. In their ...