Abstract:We show that proper use of similarity transformation in PT-symmetry operator can justify real spectrum. Further we discuss its limitation. As an example of this we consider harmonic oscillator to demonstrate this.
It is interesting to note that pseudo-hermiticity condition fails to preserve spectral invariant nature in nearly degenerate quantum states of single and double well operators.
It is interesting to note that pseudo-hermiticity condition fails to preserve spectral invariant nature in nearly degenerate quantum states of single and double well operators.
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